Class-in-C.c

#include <stdio.h>
// skel Virtual function table (VFT)
struct file_operations {
    int (*read) (struct Classe1 *, char **);
    int (*write) (struct Classe1 *, char **, char **);
};

// skel classe
struct Classe1 {
    const struct file_operations *f_op;
    unsigned int flags;
    void *public;
    void *private;
};

// skel Costruttore classe
#define __cls_init(oops) {  \
    .flags = 0xfbadfbad,          \
    .private = {NULL},            \
    .public  = {NULL},            \
    .f_op    = oops               \
}

// new classe
typedef struct Classe1 Classe1_t; // remove struct prefix
#define Classe1_new(name, oops) \
  Classe1_t name = __cls_init(oops)

// Default function table class
int read_int(struct Classe1 * cls, char **var){
  //cls.public[var]
  return 0;
}
int write_int(struct Classe1 * cls, char **var, char **val){
  //cls.public[var]=val
  return 0;
}
static const struct file_operations default_op = {
  .read = &read_int,
  .write = &write_int
};


/* e.g.
  gcc -fpic -O0 -std=c99 -Wall main.c -o main
*/
int main() {
  char ** example;
  Classe1_new( iamclass, &default_op);
  printf("read() -> %d\n", iamclass.f_op->read(&iamclass, example));
  return 0;
}