fork-5.c

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>	
#include <wait.h>	

void main()
{
	int i;
	int status;

	for (i = 0; i < 2; i++)
		if (fork() == 0) { /* Child */
			sleep(i+1);
			exit(i+1); 
		}

	for (i = 0; i < 2; i++) { /* Parent */
		pid_t wpid = wait(&status);
		if (WIFEXITED(status))
			printf("Child with PID %d terminated with exit status %d\n", wpid, WEXITSTATUS(status));
		else
			printf("Child with PID %d terminated abnormally\n", wpid);
	}
}