use override keyword in plugin sources

examples/plugins/angle_zero2.h

@@ -21,17 +21,17 @@ namespace LAMMPS_NS {
 class AngleZero2 : public Angle {
  public:
   AngleZero2(class LAMMPS *);
-  virtual ~AngleZero2();
-  virtual void compute(int, int);
-  virtual void coeff(int, char **);
-  virtual void settings(int, char **);
+  ~AngleZero2() override;
+  void compute(int, int) override;
+  void coeff(int, char **) override;
+  void settings(int, char **) override;
 
-  double equilibrium_angle(int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_data(FILE *);
+  double equilibrium_angle(int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_data(FILE *) override;
 
-  double single(int, int, int, int);
+  double single(int, int, int, int) override;
 
  protected:
   double *theta0;

examples/plugins/bond_zero2.h

@@ -21,18 +21,18 @@ namespace LAMMPS_NS {
 class BondZero2 : public Bond {
  public:
   BondZero2(class LAMMPS *);
-  virtual ~BondZero2();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
+  ~BondZero2() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
 
-  void coeff(int, char **);
-  double equilibrium_distance(int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_data(FILE *);
+  void coeff(int, char **) override;
+  double equilibrium_distance(int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_data(FILE *) override;
 
-  double single(int, double, int, int, double &);
-  virtual void *extract(const char *, int &);
+  double single(int, double, int, int, double &) override;
+  void *extract(const char *, int &) override;
 
  protected:
   double *r0;

examples/plugins/dihedral_zero2.h

@@ -25,14 +25,14 @@ namespace LAMMPS_NS {
 class DihedralZero2 : public Dihedral {
  public:
   DihedralZero2(class LAMMPS *);
-  virtual ~DihedralZero2();
-  virtual void compute(int, int);
-  virtual void coeff(int, char **);
-  virtual void settings(int, char **);
+  ~DihedralZero2() override;
+  void compute(int, int) override;
+  void coeff(int, char **) override;
+  void settings(int, char **) override;
 
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_data(FILE *);
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_data(FILE *) override;
 
  protected:
   int coeffflag;

examples/plugins/fix_nve2.h

@@ -11,12 +11,6 @@
    See the README file in the top-level LAMMPS directory.
 ------------------------------------------------------------------------- */
 
-#ifdef FIX_CLASS
-
-FixStyle(nve2, FixNVE2)
-
-#else
-
 #ifndef LMP_FIX_NVE2_H
 #define LMP_FIX_NVE2_H
 
@@ -27,14 +21,14 @@ namespace LAMMPS_NS {
 class FixNVE2 : public Fix {
  public:
   FixNVE2(class LAMMPS *, int, char **);
-  virtual ~FixNVE2() {}
-  int setmask();
-  virtual void init();
-  virtual void initial_integrate(int);
-  virtual void final_integrate();
-  virtual void initial_integrate_respa(int, int, int);
-  virtual void final_integrate_respa(int, int);
-  virtual void reset_dt();
+
+  int setmask() override;
+  void init() override;
+  void initial_integrate(int) override;
+  void final_integrate() override;
+  void initial_integrate_respa(int, int, int) override;
+  void final_integrate_respa(int, int) override;
+  void reset_dt() override;
 
  protected:
   double dtv, dtf;
@@ -44,7 +38,6 @@ class FixNVE2 : public Fix {
 
 }    // namespace LAMMPS_NS
 
-#endif
 #endif
 
     /* ERROR/WARNING messages:

examples/plugins/improper_zero2.h

@@ -21,14 +21,14 @@ namespace LAMMPS_NS {
 class ImproperZero2 : public Improper {
  public:
   ImproperZero2(class LAMMPS *);
-  virtual ~ImproperZero2();
-  virtual void compute(int, int);
-  virtual void coeff(int, char **);
-  virtual void settings(int, char **);
+  ~ImproperZero2() override;
+  void compute(int, int) override;
+  void coeff(int, char **) override;
+  void settings(int, char **) override;
 
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_data(FILE *);
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_data(FILE *) override;
 
  protected:
   int coeffflag;

examples/plugins/pair_morse2.h

@@ -21,20 +21,20 @@ namespace LAMMPS_NS {
 class PairMorse2 : public Pair {
  public:
   PairMorse2(class LAMMPS *);
-  virtual ~PairMorse2();
-  virtual void compute(int, int);
+  ~PairMorse2() override;
+  void compute(int, int) override;
 
-  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 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;

examples/plugins/pair_morse2_omp.h

@@ -28,8 +28,8 @@ class PairMorse2OMP : public PairMorse2, public ThrOMP {
  public:
   PairMorse2OMP(class LAMMPS *);
 
-  virtual void compute(int, int);
-  virtual double memory_usage();
+  void compute(int, int) override;
+  double memory_usage() override;
 
  private:
   template <int EVFLAG, int EFLAG, int NEWTON_PAIR>

examples/plugins/pair_zero2.h

@@ -31,19 +31,19 @@ namespace LAMMPS_NS {
 class PairZero2 : public Pair {
  public:
   PairZero2(class LAMMPS *);
-  virtual ~PairZero2();
-  virtual void compute(int, int);
-  virtual void compute_outer(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 &);
+  ~PairZero2() override;
+  void compute(int, int) override;
+  void compute_outer(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_global;