Write a program that defines a(n):

• person type (first name, last name, pointers to a father and a mother person)
• function that displays the information of a person

Write a main function to test your functions.

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

struct person {
  char familyname[16];
  char firstname[16];
  struct person *father;
  struct person *mother;
};

typedef struct person person;

void display_person(person *p)
{
  printf("My name is %s %s", p->firstname, p->familyname); 
  if ( p->father != NULL ) 
    printf(", my father: %s %s", p->father->firstname, p->father->familyname);
  if ( p->mother != NULL ) 
    printf(", my mother: %s %s", p->mother->firstname, p->mother->familyname);
  printf("\n");
}

void main() {
  person *p;
  person* people[1024];
  int i;

  p = (person *)malloc(sizeof(person));
  strcpy(p->familyname, "Yaacoub");
  strcpy(p->firstname, "Jacques");
  p->father = NULL;
  p->mother = NULL;
  people[0] = p;

  p = (person *)malloc(sizeof(person));
  strcpy(p->familyname, "Macca");
  strcpy(p->firstname, "Jacqueline");
  p->father = NULL;
  p->mother = NULL;
  people[1] = p;

  p = (person *)malloc(sizeof(person));
  strcpy(p->familyname, "Yaacoub");
  strcpy(p->firstname, "Antoun");
  p->father = people[0];
  p->mother = people[1];
  people[2] = p;

  for ( i=0; i<3; i++ )
    display_person(people[i]);
}