#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "person.h"
int main() {
    Person *p=Person(0,"Peter")
    p.print_age;
    for (int i=0;i<13;i++) {
        p.happy_birthday;
        p.print_age;
    }
    return 0;
}