Apply override to Pair classes

src/ASPHERE/pair_gayberne.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairGayBerne : public Pair {
  public:
   PairGayBerne(LAMMPS *lmp);
-  virtual ~PairGayBerne();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
+  ~PairGayBerne() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
 
  protected:
   enum { SPHERE_SPHERE, SPHERE_ELLIPSE, ELLIPSE_SPHERE, ELLIPSE_ELLIPSE };

src/ASPHERE/pair_line_lj.h

@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class PairLineLJ : public Pair {
  public:
   PairLineLJ(class LAMMPS *);
-  virtual ~PairLineLJ();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  double init_one(int, int);
+  ~PairLineLJ() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
 
  protected:
   double cut_global;

src/ASPHERE/pair_resquared.h

@@ -27,16 +27,16 @@ namespace LAMMPS_NS {
 class PairRESquared : public Pair {
  public:
   PairRESquared(LAMMPS *lmp);
-  virtual ~PairRESquared();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
+  ~PairRESquared() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
 
  protected:
   enum { SPHERE_SPHERE, SPHERE_ELLIPSE, ELLIPSE_SPHERE, ELLIPSE_ELLIPSE };

src/ASPHERE/pair_tri_lj.h

@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class PairTriLJ : public Pair {
  public:
   PairTriLJ(class LAMMPS *);
-  virtual ~PairTriLJ();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  double init_one(int, int);
+  ~PairTriLJ() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
 
  protected:
   double cut_global;

src/BODY/pair_body_nparticle.h

@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class PairBodyNparticle : public Pair {
  public:
   PairBodyNparticle(class LAMMPS *);
-  ~PairBodyNparticle();
-  void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
+  ~PairBodyNparticle() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
 
  protected:
   double cut_global;

src/BODY/pair_body_rounded_polygon.h

@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class PairBodyRoundedPolygon : public Pair {
  public:
   PairBodyRoundedPolygon(class LAMMPS *);
-  ~PairBodyRoundedPolygon();
-  void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
+  ~PairBodyRoundedPolygon() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
 
   struct Contact {
     int ibody, jbody;     // body (i.e. atom) indices (not tags)

src/BODY/pair_body_rounded_polyhedron.h

@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class PairBodyRoundedPolyhedron : public Pair {
  public:
   PairBodyRoundedPolyhedron(class LAMMPS *);
-  ~PairBodyRoundedPolyhedron();
-  void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
+  ~PairBodyRoundedPolyhedron() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
 
   virtual void kernel_force(double R, int itype, int jtype, double &energy, double &fpair);
 

src/CG-DNA/pair_oxdna2_coaxstk.h

@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class PairOxdna2Coaxstk : public Pair {
  public:
   PairOxdna2Coaxstk(class LAMMPS *);
-  virtual ~PairOxdna2Coaxstk();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_list(int, class NeighList *);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  void *extract(const char *, int &);
+  ~PairOxdna2Coaxstk() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_list(int, class NeighList *) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   // coaxial stacking interaction

src/CG-DNA/pair_oxdna2_dh.h

@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class PairOxdna2Dh : public Pair {
  public:
   PairOxdna2Dh(class LAMMPS *);
-  virtual ~PairOxdna2Dh();
+  ~PairOxdna2Dh() override;
   virtual void compute_interaction_sites(double *, double *, double *, double *);
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_list(int, class NeighList *);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  void *extract(const char *, int &);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_list(int, class NeighList *) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double **qeff_dh_pf, **kappa_dh;

src/CG-DNA/pair_oxdna2_excv.h

@@ -27,8 +27,8 @@ namespace LAMMPS_NS {
 class PairOxdna2Excv : public PairOxdnaExcv {
  public:
   PairOxdna2Excv(class LAMMPS *lmp) : PairOxdnaExcv(lmp) {}
-  virtual ~PairOxdna2Excv() {}
-  virtual void compute_interaction_sites(double *, double *, double *, double *, double *);
+
+  void compute_interaction_sites(double *, double *, double *, double *, double *) override;
 };
 
 }    // namespace LAMMPS_NS

src/CG-DNA/pair_oxdna_coaxstk.h

@@ -28,19 +28,19 @@ namespace LAMMPS_NS {
 class PairOxdnaCoaxstk : public Pair {
  public:
   PairOxdnaCoaxstk(class LAMMPS *);
-  virtual ~PairOxdnaCoaxstk();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_list(int, class NeighList *);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  void *extract(const char *, int &);
+  ~PairOxdnaCoaxstk() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_list(int, class NeighList *) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   // coaxial stacking interaction

src/CG-DNA/pair_oxdna_excv.h

@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class PairOxdnaExcv : public Pair {
  public:
   PairOxdnaExcv(class LAMMPS *);
-  virtual ~PairOxdnaExcv();
+  ~PairOxdnaExcv() override;
   virtual void compute_interaction_sites(double *, double *, double *, double *, double *);
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_list(int, class NeighList *);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  void *extract(const char *, int &);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_list(int, class NeighList *) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   // s=sugar-phosphate backbone site, b=base site, st=stacking site

src/CG-DNA/pair_oxdna_hbond.h

@@ -28,19 +28,19 @@ namespace LAMMPS_NS {
 class PairOxdnaHbond : public Pair {
  public:
   PairOxdnaHbond(class LAMMPS *);
-  virtual ~PairOxdnaHbond();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_list(int, class NeighList *);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  void *extract(const char *, int &);
+  ~PairOxdnaHbond() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_list(int, class NeighList *) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   // h-bonding interaction

src/CG-DNA/pair_oxdna_stk.h

@@ -28,20 +28,20 @@ namespace LAMMPS_NS {
 class PairOxdnaStk : public Pair {
  public:
   PairOxdnaStk(class LAMMPS *);
-  virtual ~PairOxdnaStk();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  void init_list(int, class NeighList *);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  void *extract(const char *, int &);
+  ~PairOxdnaStk() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  void init_list(int, class NeighList *) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   // stacking interaction

src/CG-DNA/pair_oxdna_xstk.h

@@ -28,19 +28,19 @@ namespace LAMMPS_NS {
 class PairOxdnaXstk : public Pair {
  public:
   PairOxdnaXstk(class LAMMPS *);
-  virtual ~PairOxdnaXstk();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_list(int, class NeighList *);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  void *extract(const char *, int &);
+  ~PairOxdnaXstk() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_list(int, class NeighList *) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   // cross-stacking interaction

src/CG-DNA/pair_oxrna2_dh.h

@@ -27,8 +27,8 @@ namespace LAMMPS_NS {
 class PairOxrna2Dh : public PairOxdna2Dh {
  public:
   PairOxrna2Dh(class LAMMPS *lmp) : PairOxdna2Dh(lmp) {}
-  virtual ~PairOxrna2Dh() {}
-  virtual void compute_interaction_sites(double *, double *, double *, double *);
+
+  void compute_interaction_sites(double *, double *, double *, double *) override;
 };
 
 }    // namespace LAMMPS_NS

src/CG-DNA/pair_oxrna2_excv.h

@@ -27,8 +27,8 @@ namespace LAMMPS_NS {
 class PairOxrna2Excv : public PairOxdnaExcv {
  public:
   PairOxrna2Excv(class LAMMPS *lmp) : PairOxdnaExcv(lmp) {}
-  virtual ~PairOxrna2Excv() {}
-  virtual void compute_interaction_sites(double *, double *, double *, double *, double *);
+
+  void compute_interaction_sites(double *, double *, double *, double *, double *) override;
 };
 
 }    // namespace LAMMPS_NS

src/CG-DNA/pair_oxrna2_hbond.h

@@ -27,7 +27,6 @@ namespace LAMMPS_NS {
 class PairOxrna2Hbond : public PairOxdnaHbond {
  public:
   PairOxrna2Hbond(class LAMMPS *);
-  virtual ~PairOxrna2Hbond() {}
 };
 
 }    // namespace LAMMPS_NS

src/CG-DNA/pair_oxrna2_stk.h

@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class PairOxrna2Stk : public Pair {
  public:
   PairOxrna2Stk(class LAMMPS *);
-  virtual ~PairOxrna2Stk();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  void init_list(int, class NeighList *);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  void *extract(const char *, int &);
+  ~PairOxrna2Stk() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  void init_list(int, class NeighList *) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   // stacking interaction

src/CG-DNA/pair_oxrna2_xstk.h

@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class PairOxrna2Xstk : public Pair {
  public:
   PairOxrna2Xstk(class LAMMPS *);
-  virtual ~PairOxrna2Xstk();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_list(int, class NeighList *);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  void *extract(const char *, int &);
+  ~PairOxrna2Xstk() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_list(int, class NeighList *) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   // cross-stacking interaction

src/CG-SDK/pair_lj_sdk.h

@@ -31,20 +31,20 @@ namespace LAMMPS_NS {
 class PairLJSDK : public Pair {
  public:
   PairLJSDK(LAMMPS *);
-  virtual ~PairLJSDK();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
-  virtual double memory_usage();
+  ~PairLJSDK() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
+  double memory_usage() override;
 
  protected:
   int **lj_type;    // type of lennard jones potential

src/CG-SDK/pair_lj_sdk_coul_long.h

@@ -31,21 +31,21 @@ namespace LAMMPS_NS {
 class PairLJSDKCoulLong : public Pair {
  public:
   PairLJSDKCoulLong(class LAMMPS *);
-  virtual ~PairLJSDKCoulLong();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  virtual void *extract(const char *, int &);
-  virtual double memory_usage();
+  ~PairLJSDKCoulLong() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
+  double memory_usage() override;
 
  protected:
   double **cut_lj, **cut_ljsq;

src/CG-SDK/pair_lj_sdk_coul_msm.h

@@ -31,10 +31,9 @@ namespace LAMMPS_NS {
 class PairLJSDKCoulMSM : public PairLJSDKCoulLong {
  public:
   PairLJSDKCoulMSM(class LAMMPS *);
-  virtual ~PairLJSDKCoulMSM(){};
-  virtual void compute(int, int);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  virtual void *extract(const char *, int &);
+  void compute(int, int) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  private:
   template <int EVFLAG, int EFLAG, int NEWTON_PAIR> void eval_msm();

src/CLASS2/pair_lj_class2.h

@@ -25,24 +25,24 @@ namespace LAMMPS_NS {
 class PairLJClass2 : public Pair {
  public:
   PairLJClass2(class LAMMPS *);
-  virtual ~PairLJClass2();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  ~PairLJClass2() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
-  void compute_inner();
-  void compute_middle();
-  void compute_outer(int, int);
+  void compute_inner() override;
+  void compute_middle() override;
+  void compute_outer(int, int) override;
 
  protected:
   double cut_global;

src/CLASS2/pair_lj_class2_coul_cut.h

@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class PairLJClass2CoulCut : public Pair {
  public:
   PairLJClass2CoulCut(class LAMMPS *);
-  virtual ~PairLJClass2CoulCut();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  ~PairLJClass2CoulCut() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_lj_global, cut_coul_global;

src/CLASS2/pair_lj_class2_coul_long.h

@@ -27,24 +27,24 @@ namespace LAMMPS_NS {
 class PairLJClass2CoulLong : public Pair {
  public:
   PairLJClass2CoulLong(class LAMMPS *);
-  virtual ~PairLJClass2CoulLong();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairLJClass2CoulLong() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
-  void compute_inner();
-  void compute_middle();
-  void compute_outer(int, int);
-  void *extract(const char *, int &);
+  void compute_inner() override;
+  void compute_middle() override;
+  void compute_outer(int, int) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_lj_global;

src/COLLOID/pair_brownian.h

@@ -27,16 +27,16 @@ namespace LAMMPS_NS {
 class PairBrownian : public Pair {
  public:
   PairBrownian(class LAMMPS *);
-  virtual ~PairBrownian();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  virtual double init_one(int, int);
-  virtual void init_style();
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
+  ~PairBrownian() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void init_style() override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
 
  protected:
   double cut_inner_global, cut_global;

src/COLLOID/pair_brownian_poly.h

@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class PairBrownianPoly : public PairBrownian {
  public:
   PairBrownianPoly(class LAMMPS *);
-  ~PairBrownianPoly() {}
-  void compute(int, int);
-  double init_one(int, int);
-  void init_style();
+
+  void compute(int, int) override;
+  double init_one(int, int) override;
+  void init_style() override;
 };
 
 }    // namespace LAMMPS_NS

src/COLLOID/pair_colloid.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairColloid : public Pair {
  public:
   PairColloid(class LAMMPS *);
-  virtual ~PairColloid();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairColloid() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   enum { SMALL_SMALL, SMALL_LARGE, LARGE_LARGE };

src/COLLOID/pair_lubricate.h

@@ -27,21 +27,21 @@ namespace LAMMPS_NS {
 class PairLubricate : public Pair {
  public:
   PairLubricate(class LAMMPS *);
-  virtual ~PairLubricate();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  virtual void init_style();
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
+  ~PairLubricate() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void init_style() override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
   int pre_adapt(char *, int, int, int, int);
   void adapt(int, int, int, int, int, double);
 
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
 
  protected:
   double mu, cut_inner_global, cut_global;

src/COLLOID/pair_lubricateU.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairLubricateU : public Pair {
  public:
   PairLubricateU(class LAMMPS *);
-  virtual ~PairLubricateU();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  virtual void init_style();
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
+  ~PairLubricateU() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void init_style() override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
 
  protected:
   double cut_inner_global, cut_global;

src/COLLOID/pair_lubricateU_poly.h

@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class PairLubricateUPoly : public PairLubricateU {
  public:
   PairLubricateUPoly(class LAMMPS *);
-  ~PairLubricateUPoly() {}
-  void compute(int, int);
-  void settings(int, char **);
-  void init_style();
+
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void init_style() override;
 
  private:
   double vol_P;
@@ -38,9 +38,9 @@ class PairLubricateUPoly : public PairLubricateU {
   class FixWall *wallfix;
 
   void iterate(double **, int);
-  void compute_RE(double **);
-  void compute_RU(double **);
-  void compute_Fh(double **);
+  void compute_RE(double **) override;
+  void compute_RU(double **) override;
+  void compute_Fh(double **) override;
 };
 
 }    // namespace LAMMPS_NS

src/COLLOID/pair_lubricate_poly.h

@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class PairLubricatePoly : public PairLubricate {
  public:
   PairLubricatePoly(class LAMMPS *);
-  ~PairLubricatePoly() {}
-  void compute(int, int);
-  void init_style();
+
+  void compute(int, int) override;
+  void init_style() override;
 };
 
 }    // namespace LAMMPS_NS

src/COLLOID/pair_yukawa_colloid.h

@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class PairYukawaColloid : public PairYukawa {
  public:
   PairYukawaColloid(class LAMMPS *);
-  virtual ~PairYukawaColloid() {}
-  virtual void compute(int, int);
-  void init_style();
-  double init_one(int, int);
-  double single(int, int, int, int, double, double, double, double &);
+
+  void compute(int, int) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 };
 
 }    // namespace LAMMPS_NS

src/CORESHELL/pair_born_coul_dsf_cs.h

@@ -27,7 +27,7 @@ namespace LAMMPS_NS {
 class PairBornCoulDSFCS : public PairBornCoulDSF {
  public:
   PairBornCoulDSFCS(class LAMMPS *);
-  virtual void compute(int, int);
+  void compute(int, int) override;
 };
 
 }    // namespace LAMMPS_NS

src/CORESHELL/pair_born_coul_long_cs.h

@@ -27,7 +27,7 @@ namespace LAMMPS_NS {
 class PairBornCoulLongCS : public PairBornCoulLong {
  public:
   PairBornCoulLongCS(class LAMMPS *);
-  virtual void compute(int, int);
+  void compute(int, int) override;
 };
 
 }    // namespace LAMMPS_NS

src/CORESHELL/pair_born_coul_wolf_cs.h

@@ -27,7 +27,7 @@ namespace LAMMPS_NS {
 class PairBornCoulWolfCS : public PairBornCoulWolf {
  public:
   PairBornCoulWolfCS(class LAMMPS *);
-  virtual void compute(int, int);
+  void compute(int, int) override;
 };
 
 }    // namespace LAMMPS_NS

src/CORESHELL/pair_buck_coul_long_cs.h

@@ -27,7 +27,7 @@ namespace LAMMPS_NS {
 class PairBuckCoulLongCS : public PairBuckCoulLong {
  public:
   PairBuckCoulLongCS(class LAMMPS *);
-  virtual void compute(int, int);
+  void compute(int, int) override;
 };
 
 }    // namespace LAMMPS_NS

src/CORESHELL/pair_coul_long_cs.h

@@ -27,7 +27,7 @@ namespace LAMMPS_NS {
 class PairCoulLongCS : public PairCoulLong {
  public:
   PairCoulLongCS(class LAMMPS *);
-  virtual void compute(int, int);
+  void compute(int, int) override;
 };
 
 }    // namespace LAMMPS_NS

src/CORESHELL/pair_coul_wolf_cs.h

@@ -27,7 +27,7 @@ namespace LAMMPS_NS {
 class PairCoulWolfCS : public PairCoulWolf {
  public:
   PairCoulWolfCS(class LAMMPS *);
-  virtual void compute(int, int);
+  void compute(int, int) override;
 };
 
 }    // namespace LAMMPS_NS

src/CORESHELL/pair_lj_class2_coul_long_cs.h

@@ -28,10 +28,10 @@ class PairLJClass2CoulLongCS : public PairLJClass2CoulLong {
 
  public:
   PairLJClass2CoulLongCS(class LAMMPS *);
-  virtual void compute(int, int);
-  void compute_inner();
-  void compute_middle();
-  void compute_outer(int, int);
+  void compute(int, int) override;
+  void compute_inner() override;
+  void compute_middle() override;
+  void compute_outer(int, int) override;
 };
 
 }    // namespace LAMMPS_NS

src/CORESHELL/pair_lj_cut_coul_long_cs.h

@@ -28,10 +28,10 @@ class PairLJCutCoulLongCS : public PairLJCutCoulLong {
 
  public:
   PairLJCutCoulLongCS(class LAMMPS *);
-  virtual void compute(int, int);
-  void compute_inner();
-  void compute_middle();
-  virtual void compute_outer(int, int);
+  void compute(int, int) override;
+  void compute_inner() override;
+  void compute_middle() override;
+  void compute_outer(int, int) override;
 };
 
 }    // namespace LAMMPS_NS

src/DIELECTRIC/pair_coul_cut_dielectric.h

@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class PairCoulCutDielectric : public PairCoulCut {
  public:
   PairCoulCutDielectric(class LAMMPS *);
-  virtual ~PairCoulCutDielectric();
-  virtual void compute(int, int);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  void init_style();
+  ~PairCoulCutDielectric() override;
+  void compute(int, int) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void init_style() override;
 
   double **efield;
 

src/DIELECTRIC/pair_coul_long_dielectric.h

@@ -27,9 +27,9 @@ namespace LAMMPS_NS {
 class PairCoulLongDielectric : public PairCoulLong {
  public:
   PairCoulLongDielectric(class LAMMPS *);
-  ~PairCoulLongDielectric();
-  virtual void compute(int, int);
-  virtual void init_style();
+  ~PairCoulLongDielectric() override;
+  void compute(int, int) override;
+  void init_style() override;
 
   double **efield;
 

src/DIELECTRIC/pair_lj_cut_coul_cut_dielectric.h

@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class PairLJCutCoulCutDielectric : public PairLJCutCoulCut {
  public:
   PairLJCutCoulCutDielectric(class LAMMPS *);
-  virtual ~PairLJCutCoulCutDielectric();
-  virtual void compute(int, int);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  void init_style();
+  ~PairLJCutCoulCutDielectric() override;
+  void compute(int, int) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void init_style() override;
 
   double **efield;
   double *epot;

src/DIELECTRIC/pair_lj_cut_coul_debye_dielectric.h

@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class PairLJCutCoulDebyeDielectric : public PairLJCutCoulDebye {
  public:
   PairLJCutCoulDebyeDielectric(class LAMMPS *);
-  virtual ~PairLJCutCoulDebyeDielectric();
-  virtual void compute(int, int);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  void init_style();
+  ~PairLJCutCoulDebyeDielectric() override;
+  void compute(int, int) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void init_style() override;
 
   double **efield;
   double *epot;

src/DIELECTRIC/pair_lj_cut_coul_long_dielectric.h

@@ -28,10 +28,10 @@ class PairLJCutCoulLongDielectric : public PairLJCutCoulLong {
 
  public:
   PairLJCutCoulLongDielectric(class LAMMPS *);
-  virtual ~PairLJCutCoulLongDielectric();
-  virtual void compute(int, int);
-  virtual void init_style();
-  virtual double single(int, int, int, int, double, double, double, double &);
+  ~PairLJCutCoulLongDielectric() override;
+  void compute(int, int) override;
+  void init_style() override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
   double **efield;
   double *epot;

src/DIELECTRIC/pair_lj_cut_coul_msm_dielectric.h

@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class PairLJCutCoulMSMDielectric : public PairLJCutCoulLong {
  public:
   PairLJCutCoulMSMDielectric(class LAMMPS *);
-  virtual ~PairLJCutCoulMSMDielectric();
-  virtual void init_style();
-  virtual void compute(int, int);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  virtual void *extract(const char *, int &);
+  ~PairLJCutCoulMSMDielectric() override;
+  void init_style() override;
+  void compute(int, int) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
   double **efield;
 

src/DIELECTRIC/pair_lj_long_coul_long_dielectric.h

@@ -27,10 +27,10 @@ namespace LAMMPS_NS {
 class PairLJLongCoulLongDielectric : public PairLJLongCoulLong {
  public:
   PairLJLongCoulLongDielectric(class LAMMPS *);
-  virtual ~PairLJLongCoulLongDielectric();
-  virtual void compute(int, int);
-  void init_style();
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairLJLongCoulLongDielectric() override;
+  void compute(int, int) override;
+  void init_style() override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
   double **efield;
   double *epot;

src/DIPOLE/pair_lj_cut_dipole_cut.h

@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class PairLJCutDipoleCut : public Pair {
  public:
   PairLJCutDipoleCut(class LAMMPS *);
-  virtual ~PairLJCutDipoleCut();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void *extract(const char *, int &);
+  ~PairLJCutDipoleCut() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_lj_global, cut_coul_global;

src/DIPOLE/pair_lj_cut_dipole_long.h

@@ -30,17 +30,17 @@ class PairLJCutDipoleLong : public Pair {
   double **sigma;
 
   PairLJCutDipoleLong(class LAMMPS *);
-  ~PairLJCutDipoleLong();
-  void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void init_style();
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void *extract(const char *, int &);
+  ~PairLJCutDipoleLong() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void init_style() override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_lj_global;

src/DIPOLE/pair_lj_long_dipole_long.h

@@ -29,18 +29,18 @@ class PairLJLongDipoleLong : public Pair {
   double cut_coul;
 
   PairLJLongDipoleLong(class LAMMPS *);
-  virtual ~PairLJLongDipoleLong();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
+  ~PairLJLongDipoleLong() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
 
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void *extract(const char *, int &);
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_lj_global;

src/DIPOLE/pair_lj_sf_dipole_sf.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairLJSFDipoleSF : public Pair {
  public:
   PairLJSFDipoleSF(class LAMMPS *);
-  virtual ~PairLJSFDipoleSF();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  ~PairLJSFDipoleSF() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_lj_global, cut_coul_global;

src/DPD-BASIC/pair_dpd.h

@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class PairDPD : public Pair {
  public:
   PairDPD(class LAMMPS *);
-  virtual ~PairDPD();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  virtual void write_restart(FILE *);
-  virtual void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  virtual void write_data(FILE *);
-  virtual void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairDPD() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_global, temperature;

src/DPD-BASIC/pair_dpd_ext.h

@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class PairDPDExt : public Pair {
  public:
   PairDPDExt(class LAMMPS *);
-  virtual ~PairDPDExt();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  virtual void write_restart(FILE *);
-  virtual void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  virtual void write_data(FILE *);
-  virtual void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairDPDExt() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_global, temperature;

src/DPD-BASIC/pair_dpd_ext_tstat.h

@@ -27,16 +27,15 @@ namespace LAMMPS_NS {
 class PairDPDExtTstat : public PairDPDExt {
  public:
   PairDPDExtTstat(class LAMMPS *);
-  ~PairDPDExtTstat() {}
-  void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
 
  protected:
   double t_start, t_stop;

src/DPD-BASIC/pair_dpd_tstat.h

@@ -27,16 +27,15 @@ namespace LAMMPS_NS {
 class PairDPDTstat : public PairDPD {
  public:
   PairDPDTstat(class LAMMPS *);
-  ~PairDPDTstat() {}
-  void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
 
  protected:
   double t_start, t_stop;

src/DPD-MESO/pair_edpd.h

@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class PairEDPD : public Pair {
  public:
   PairEDPD(class LAMMPS *);
-  virtual ~PairEDPD();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  virtual void write_restart(FILE *);
-  virtual void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairEDPD() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_global;

src/DPD-MESO/pair_mdpd.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairMDPD : public Pair {
  public:
   PairMDPD(class LAMMPS *);
-  virtual ~PairMDPD();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  virtual void write_restart(FILE *);
-  virtual void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  virtual void write_data(FILE *);
-  virtual void write_data_all(FILE *);
+  ~PairMDPD() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
 
  protected:
   double cut_global, temperature;

src/DPD-MESO/pair_mdpd_rhosum.h

@@ -27,15 +27,15 @@ namespace LAMMPS_NS {
 class PairMDPDRhoSum : public Pair {
  public:
   PairMDPDRhoSum(class LAMMPS *);
-  virtual ~PairMDPDRhoSum();
-  void init_style();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  virtual double init_one(int, int);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
+  ~PairMDPDRhoSum() override;
+  void init_style() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
 
  protected:
   double **cut;

src/DPD-MESO/pair_tdpd.h

@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class PairTDPD : public Pair {
  public:
   PairTDPD(class LAMMPS *);
-  virtual ~PairTDPD();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  virtual void write_restart(FILE *);
-  virtual void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairTDPD() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_global, temperature;

src/DPD-REACT/pair_dpd_fdt.h

@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class PairDPDfdt : public Pair {
  public:
   PairDPDfdt(class LAMMPS *);
-  virtual ~PairDPDfdt();
-  void compute(int, int);
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairDPDfdt() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
   double **cut;
   double **a0;

src/DPD-REACT/pair_dpd_fdt_energy.h

@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class PairDPDfdtEnergy : public Pair {
  public:
   PairDPDfdtEnergy(class LAMMPS *);
-  virtual ~PairDPDfdtEnergy();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
-  virtual void init_style();
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
+  ~PairDPDfdtEnergy() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
 
   double **cut;
   double **a0;

src/DPD-REACT/pair_exp6_rx.h

@@ -27,15 +27,15 @@ namespace LAMMPS_NS {
 class PairExp6rx : public Pair {
  public:
   PairExp6rx(class LAMMPS *);
-  virtual ~PairExp6rx();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  virtual void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
+  ~PairExp6rx() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
 
   struct Param {
     double epsilon, rm, alpha;
@@ -62,7 +62,7 @@ class PairExp6rx : public Pair {
   int nspecies;
   virtual void read_file(char *);
   void read_file2(char *);
-  void setup();
+  void setup() override;
 
   int isite1, isite2;
   char *site1, *site2;

src/DPD-REACT/pair_multi_lucy.h

@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class PairMultiLucy : public Pair {
  public:
   PairMultiLucy(class LAMMPS *);
-  virtual ~PairMultiLucy();
+  ~PairMultiLucy() override;
 
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  int pack_forward_comm(int, int *, double *, int, int *);
-  void unpack_forward_comm(int, int, double *);
-  int pack_reverse_comm(int, int, double *);
-  void unpack_reverse_comm(int, int *, double *);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
   void computeLocalDensity();
   double rho_0;
 

src/DPD-REACT/pair_multi_lucy_rx.h

@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class PairMultiLucyRX : public Pair {
  public:
   PairMultiLucyRX(class LAMMPS *);
-  virtual ~PairMultiLucyRX();
+  ~PairMultiLucyRX() override;
 
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  virtual int pack_forward_comm(int, int *, double *, int, int *);
-  virtual void unpack_forward_comm(int, int, double *);
-  virtual int pack_reverse_comm(int, int, double *);
-  virtual void unpack_reverse_comm(int, int *, double *);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  int pack_forward_comm(int, int *, double *, int, int *) override;
+  void unpack_forward_comm(int, int, double *) override;
+  int pack_reverse_comm(int, int, double *) override;
+  void unpack_reverse_comm(int, int *, double *) override;
   void computeLocalDensity();
   double rho_0;
 

src/DPD-REACT/pair_table_rx.h

@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class PairTableRX : public PairTable {
  public:
   PairTableRX(class LAMMPS *);
-  virtual ~PairTableRX();
+  ~PairTableRX() override;
 
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  virtual double single(int, int, int, int, double, double, double, double &);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   int nspecies;

src/DPD-SMOOTH/pair_sdpd_taitwater_isothermal.h

@@ -31,12 +31,12 @@ namespace LAMMPS_NS {
 class PairSDPDTaitwaterIsothermal : public Pair {
  public:
   PairSDPDTaitwaterIsothermal(class LAMMPS *);
-  virtual ~PairSDPDTaitwaterIsothermal();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  virtual double init_one(int, int);
-  virtual void init_style();
+  ~PairSDPDTaitwaterIsothermal() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void init_style() override;
 
  protected:
   double viscosity, temperature;

src/DRUDE/pair_coul_tt.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairCoulTT : public Pair {
  public:
   PairCoulTT(class LAMMPS *);
-  virtual ~PairCoulTT();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  ~PairCoulTT() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   int n_global;

src/DRUDE/pair_lj_cut_thole_long.h

@@ -28,19 +28,19 @@ class PairLJCutTholeLong : public Pair {
 
  public:
   PairLJCutTholeLong(class LAMMPS *);
-  virtual ~PairLJCutTholeLong();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  virtual void *extract(const char *, int &);
+  ~PairLJCutTholeLong() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_lj_global;

src/DRUDE/pair_thole.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairThole : public Pair {
  public:
   PairThole(class LAMMPS *);
-  virtual ~PairThole();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  ~PairThole() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double thole_global;

src/EFF/pair_eff_cut.h

@@ -27,22 +27,22 @@ namespace LAMMPS_NS {
 class PairEffCut : public Pair {
  public:
   PairEffCut(class LAMMPS *);
-  virtual ~PairEffCut();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
+  ~PairEffCut() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
   void min_pointers(double **, double **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
 
-  void min_xf_pointers(int, double **, double **);
-  void min_xf_get(int);
-  void min_x_set(int);
-  double memory_usage();
+  void min_xf_pointers(int, double **, double **) override;
+  void min_xf_get(int) override;
+  void min_x_set(int) override;
+  double memory_usage() override;
 
  private:
   int limit_eradius_flag, pressure_with_evirials_flag;

src/EXTRA-PAIR/pair_beck.h

@@ -27,16 +27,16 @@ namespace LAMMPS_NS {
 class PairBeck : public Pair {
  public:
   PairBeck(class LAMMPS *);
-  virtual ~PairBeck();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairBeck() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_global;

src/EXTRA-PAIR/pair_born_coul_dsf.h

@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class PairBornCoulDSF : public Pair {
  public:
   PairBornCoulDSF(class LAMMPS *);
-  virtual ~PairBornCoulDSF();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairBornCoulDSF() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_lj_global, alpha;

src/EXTRA-PAIR/pair_born_coul_wolf.h

@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class PairBornCoulWolf : public Pair {
  public:
   PairBornCoulWolf(class LAMMPS *);
-  virtual ~PairBornCoulWolf();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairBornCoulWolf() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_lj_global, alf;

src/EXTRA-PAIR/pair_buck_mdf.h

@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class PairBuckMDF : public Pair {
  public:
   PairBuckMDF(class LAMMPS *);
-  virtual ~PairBuckMDF();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  ~PairBuckMDF() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_global, cut_inner_global;

src/EXTRA-PAIR/pair_cosine_squared.h

@@ -30,20 +30,20 @@ namespace LAMMPS_NS {
 class PairCosineSquared : public Pair {
  public:
   PairCosineSquared(class LAMMPS *);
-  virtual ~PairCosineSquared();
-  void settings(int, char **);
-  void coeff(int, char **);
+  ~PairCosineSquared() override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
   // void init_style();
-  double init_one(int, int);
-  void modify_params(int, char **);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  virtual void compute(int, int);
-  double single(int, int, int, int, double, double, double, double &);
+  double init_one(int, int) override;
+  void modify_params(int, char **) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  void compute(int, int) override;
+  double single(int, int, int, int, double, double, double, double &) override;
   // void *extract(const char *, int &);
 
   /* RESPA stuff not implemented...

src/EXTRA-PAIR/pair_coul_cut_global.h

@@ -27,8 +27,8 @@ namespace LAMMPS_NS {
 class PairCoulCutGlobal : public PairCoulCut {
  public:
   PairCoulCutGlobal(class LAMMPS *lmp) : PairCoulCut(lmp) {}
-  void coeff(int, char **);
-  void *extract(const char *, int &);
+  void coeff(int, char **) override;
+  void *extract(const char *, int &) override;
 };
 
 }    // namespace LAMMPS_NS

src/EXTRA-PAIR/pair_coul_diel.h

@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class PairCoulDiel : public Pair {
  public:
   PairCoulDiel(class LAMMPS *);
-  virtual ~PairCoulDiel();
+  ~PairCoulDiel() override;
 
-  virtual void compute(int, int);
+  void compute(int, int) override;
 
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
-  virtual void init_style();
-  virtual double init_one(int, int);
-  virtual void write_restart(FILE *);
-  virtual void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
 
-  virtual double single(int, int, int, int, double, double, double, double &);
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_global;

src/EXTRA-PAIR/pair_coul_exclude.h

@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class PairCoulExclude : public Pair {
  public:
   PairCoulExclude(class LAMMPS *);
-  virtual ~PairCoulExclude();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  virtual void write_data(FILE *);
-  virtual void write_data_all(FILE *);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  virtual void *extract(const char *, int &);
+  ~PairCoulExclude() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_global;

src/EXTRA-PAIR/pair_coul_slater_cut.h

@@ -27,11 +27,11 @@ namespace LAMMPS_NS {
 class PairCoulSlaterCut : public PairCoulCut {
  public:
   PairCoulSlaterCut(class LAMMPS *);
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double lamda;

src/EXTRA-PAIR/pair_coul_slater_long.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairCoulSlaterLong : public Pair {
  public:
   PairCoulSlaterLong(class LAMMPS *);
-  ~PairCoulSlaterLong();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  virtual double single(int, int, int, int, double, double, double, double &);
-  virtual void *extract(const char *, int &);
+  ~PairCoulSlaterLong() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_coul, cut_coulsq, qdist;

src/EXTRA-PAIR/pair_e3b.h

@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class PairE3B : public Pair {
  public:
   PairE3B(class LAMMPS *);
-  virtual ~PairE3B();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  virtual void coeff(int, char **);
-  virtual double init_one(int, int);
-  virtual void init_style();
+  ~PairE3B() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void init_style() override;
 
  protected:
   //potential parameters

src/EXTRA-PAIR/pair_gauss.h

@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class PairGauss : public Pair {
  public:
   PairGauss(class LAMMPS *);
-  virtual ~PairGauss();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *fp);
-  void write_data_all(FILE *fp);
-  double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  ~PairGauss() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *fp) override;
+  void write_data_all(FILE *fp) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_global;

src/EXTRA-PAIR/pair_gauss_cut.h

@@ -27,25 +27,25 @@ namespace LAMMPS_NS {
 class PairGaussCut : public Pair {
  public:
   PairGaussCut(class LAMMPS *);
-  ~PairGaussCut();
+  ~PairGaussCut() override;
 
-  virtual void compute(int, int);
+  void compute(int, int) override;
 
-  virtual double single(int, int, int, int, double, double, double, double &);
+  double single(int, int, int, int, double, double, double, double &) override;
 
-  virtual void settings(int, char **);
-  virtual void coeff(int, char **);
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
 
-  virtual double init_one(int, int);
+  double init_one(int, int) override;
 
-  virtual void write_restart(FILE *);
-  virtual void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  virtual void write_data(FILE *fp);
-  virtual void write_data_all(FILE *fp);
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *fp) override;
+  void write_data_all(FILE *fp) override;
 
-  virtual double memory_usage();
+  double memory_usage() override;
 
  protected:
   double cut_global;

src/EXTRA-PAIR/pair_harmonic_cut.h

@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class PairHarmonicCut : public Pair {
  public:
   PairHarmonicCut(class LAMMPS *);
-  virtual ~PairHarmonicCut();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  ~PairHarmonicCut() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double **k, **cut;

src/EXTRA-PAIR/pair_lennard_mdf.h

@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class PairLennardMDF : public Pair {
  public:
   PairLennardMDF(class LAMMPS *);
-  virtual ~PairLennardMDF();
+  ~PairLennardMDF() override;
 
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_global, cut_inner_global;

src/EXTRA-PAIR/pair_lj96_cut.h

@@ -27,24 +27,24 @@ namespace LAMMPS_NS {
 class PairLJ96Cut : public Pair {
  public:
   PairLJ96Cut(class LAMMPS *);
-  virtual ~PairLJ96Cut();
+  ~PairLJ96Cut() override;
 
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
-  void compute_inner();
-  void compute_middle();
-  void compute_outer(int, int);
+  void compute_inner() override;
+  void compute_middle() override;
+  void compute_outer(int, int) override;
 
  protected:
   double cut_global;

src/EXTRA-PAIR/pair_lj_cubic.h

@@ -27,17 +27,17 @@ namespace LAMMPS_NS {
 class PairLJCubic : public Pair {
  public:
   PairLJCubic(class LAMMPS *);
-  virtual ~PairLJCubic();
+  ~PairLJCubic() override;
 
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double **cut, **cut_inner, **cut_inner_sq;

src/EXTRA-PAIR/pair_lj_cut_coul_debye.h

@@ -27,12 +27,12 @@ namespace LAMMPS_NS {
 class PairLJCutCoulDebye : public PairLJCutCoulCut {
  public:
   PairLJCutCoulDebye(class LAMMPS *);
-  virtual ~PairLJCutCoulDebye() {}
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double kappa;

src/EXTRA-PAIR/pair_lj_cut_coul_dsf.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairLJCutCoulDSF : public Pair {
  public:
   PairLJCutCoulDSF(class LAMMPS *);
-  ~PairLJCutCoulDSF();
-  void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  ~PairLJCutCoulDSF() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_lj_global;

src/EXTRA-PAIR/pair_lj_cut_coul_wolf.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairLJCutCoulWolf : public Pair {
  public:
   PairLJCutCoulWolf(class LAMMPS *);
-  virtual ~PairLJCutCoulWolf();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
+  ~PairLJCutCoulWolf() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
 
  protected:
   double cut_lj_global;

src/EXTRA-PAIR/pair_lj_expand_coul_long.h

@@ -28,24 +28,24 @@ class PairLJExpandCoulLong : public Pair {
 
  public:
   PairLJExpandCoulLong(class LAMMPS *);
-  virtual ~PairLJExpandCoulLong();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  virtual double single(int, int, int, int, double, double, double, double &);
+  ~PairLJExpandCoulLong() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
-  void compute_inner();
-  void compute_middle();
-  virtual void compute_outer(int, int);
-  virtual void *extract(const char *, int &);
+  void compute_inner() override;
+  void compute_middle() override;
+  void compute_outer(int, int) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_lj_global;

src/EXTRA-PAIR/pair_lj_gromacs.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairLJGromacs : public Pair {
  public:
   PairLJGromacs(class LAMMPS *);
-  virtual ~PairLJGromacs();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  virtual double single(int, int, int, int, double, double, double, double &);
+  ~PairLJGromacs() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_inner_global, cut_global;

src/EXTRA-PAIR/pair_lj_gromacs_coul_gromacs.h

@@ -27,19 +27,19 @@ namespace LAMMPS_NS {
 class PairLJGromacsCoulGromacs : public Pair {
  public:
   PairLJGromacsCoulGromacs(class LAMMPS *);
-  virtual ~PairLJGromacsCoulGromacs();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
-  void coeff(int, char **);
-  virtual void init_style();
-  virtual double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  virtual void write_restart_settings(FILE *);
-  virtual void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  virtual double single(int, int, int, int, double, double, double, double &);
+  ~PairLJGromacsCoulGromacs() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_lj_inner, cut_lj, cut_coul_inner, cut_coul;

src/EXTRA-PAIR/pair_lj_mdf.h

@@ -27,20 +27,20 @@ namespace LAMMPS_NS {
 class PairLJMDF : public Pair {
  public:
   PairLJMDF(class LAMMPS *);
-  virtual ~PairLJMDF();
+  ~PairLJMDF() override;
 
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double cut_global, cut_inner_global;

src/EXTRA-PAIR/pair_lj_relres.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairLJRelRes : public Pair {
  public:
   PairLJRelRes(class LAMMPS *);
-  virtual ~PairLJRelRes();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairLJRelRes() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_inner_global, cut_global, cutf_inner_global, cutf_global;

src/EXTRA-PAIR/pair_lj_smooth.h

@@ -27,18 +27,18 @@ namespace LAMMPS_NS {
 class PairLJSmooth : public Pair {
  public:
   PairLJSmooth(class LAMMPS *);
-  virtual ~PairLJSmooth();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
+  ~PairLJSmooth() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
 
  protected:
   double cut_inner_global, cut_global;

src/EXTRA-PAIR/pair_lj_smooth_linear.h

@@ -28,17 +28,17 @@ namespace LAMMPS_NS {
 class PairLJSmoothLinear : public Pair {
  public:
   PairLJSmoothLinear(class LAMMPS *);
-  virtual ~PairLJSmoothLinear();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  double single_hessian(int, int, int, int, double, double[3], double, double, double &, double[6]);
+  ~PairLJSmoothLinear() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  double single_hessian(int, int, int, int, double, double[3], double, double, double &, double[6]) override;
 
  protected:
   double cut_global;

src/EXTRA-PAIR/pair_mie_cut.h

@@ -27,22 +27,22 @@ namespace LAMMPS_NS {
 class PairMIECut : public Pair {
  public:
   PairMIECut(class LAMMPS *);
-  virtual ~PairMIECut();
-  virtual void compute(int, int);
-  void settings(int, char **);
-  void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  double single(int, int, int, int, double, double, double, double &);
-  void *extract(const char *, int &);
+  ~PairMIECut() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
+  void coeff(int, char **) override;
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  double single(int, int, int, int, double, double, double, double &) override;
+  void *extract(const char *, int &) override;
 
-  void compute_inner();
-  void compute_middle();
-  void compute_outer(int, int);
+  void compute_inner() override;
+  void compute_middle() override;
+  void compute_outer(int, int) override;
 
  protected:
   double cut_global;