/* ----------------------------------------------------------------- */
/* 	PROGRAM orphan_process.c                                                 */
/*  This program runs two processes, a parent and a child.  */
/*	The parent process terminates before the child making it an orphan process   */
/*	The init process becomes the parent of the orphan process */
/* ----------------------------------------------------------------- */



#include <stdio.h>
int main()
{
	int pid ;
	printf("I'am the original process with PID %d and PPID %d.\n",
	getpid(), getppid()) ;
	pid = fork ( ) ; /* Duplicate. Child and parent continue from here */
	if ( pid != 0 ) /* pid is non-zero,so I must be the parent*/
	{
		printf("I'am the parent with PID %d and PPID %d.\n",
		getpid(), getppid()) ;
		printf("My child's PID is %d\n", pid ) ;
	}
	else /* pid is zero, so I must be the child */
	{
		sleep(4); /* make sure that the parent terminates first */
		printf("I'm the child with PID %d and PPID %d.\n",
		getpid(), getppid()) ;
	}
		printf ("PID %d terminates.\n", getpid()) ;
}