クラスを作る

#include 

#include 
typedef struct _Name {

  char *first;

  char *last;

  void (*getName)(void*, char*);

} Name;
void _getName(void *_this, char *name) {

  Name *this = _this;

  strcpy(name, this->first);

  strcat(name, ", ");

  strcat(name, this->last);

}
void new_Name(Name *this, char *first, char *last) {

  this->first = first;

  this->last = last;

  this->getName = _getName;

}
int main() {

  Name clazz;

  char name[256];
  new_Name(&clazz, "Taro", "Yamada");

  clazz.getName((void*)&clazz, name);

  printf("%s\n", name);
  return 0;

}