C program to create a Zombie process with processID status

[singh@00-13-02-56-15-7c programs]$ vi zombie.c


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

void main()
{
    int id;
    id=fork();
    if(id>0)
    {
        printf("\nParent will sleep");
        sleep(50);
        execlp("ps","ps",(char *)0);
    }
    if(id==0)
    {
        printf("I am child\n");
        exit(10);
    }

 }

Output :

[singh@00-13-02-56-15-7c programs]$ gcc zombie.c
[singh@00-13-02-56-15-7c programs]$ ./a.out
I am child
  PID TTY          TIME CMD
 8845 pts/0    00:00:00 bash
 9025 pts/0    00:00:00 ps
 9026 pts/0    00:00:00 a.out