sortof classes using macros

#include <stdio.h>
#include <string.h>
#define Class(class_name) struct class_name;typedef struct class_name class_name; struct class_name
#define AddMethod(class_name,method_name) void (*method_name)(struct class_name *)
#define MakeObject(class_name,object_name) struct class_name object_name
#define BindMethod(object_name,method_name) object_name.method_name=&method_name
Class(Person) {
    char name[100];
    int age;
    AddMethod(Person,increment_age);
    AddMethod(Person,print_me);
};

void increment_age(struct Person *self) {
    self->age++;
}
void print_me(struct Person *self) {
    printf("\nname:%s\nage%i\n",self->name,self->age);
}

int main(int argc, const char * argv[]) {
    MakeObject(Person,p1);
    BindMethod(p1,increment_age);
    BindMethod(p1,print_me);
    strcpy(p1.name,"Jhon Doe");
    p1.age=22;

    MakeObject(Person,p2);
    BindMethod(p2,increment_age);
    BindMethod(p2,print_me);
    strcpy(p2.name,"Marry Joan");
    p2.age=33;

    p1.increment_age(&p1);
    p1.print_me(&p1);
    p2.increment_age(&p2);
    p2.print_me(&p2);
    printf("end\n");
    return 0;
}