Update value parsing in Molecule

src/molecule.h

@@ -15,6 +15,8 @@
 #define LMP_ONE_MOLECULE_H
 
 #include "pointers.h"
+#include <string>
+#include <vector>
 
 namespace LAMMPS_NS {
 
@@ -94,7 +96,7 @@ class Molecule : protected Pointers {
   // fragment info
 
   int **fragmentmask;       // nfragments by natoms
-  char **fragmentnames;
+  std::vector<std::string> fragmentnames;
 
   double center[3];         // geometric center of molecule
   double masstotal;         // total mass of molecule
@@ -163,7 +165,6 @@ class Molecule : protected Pointers {
   void readline(char *);
   void parse_keyword(int, char *, char *);
   void skip_lines(int, char *);
-  int parse(char *, char **, int);
 
   // void print();
 };