#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <pthread.h>
#include <signal.h>
#include <string.h>
#include <fcntl.h>
#include<sys/mman.h>
#include<sys/ipc.h>
#include<sys/shm.h>


int main(int ac,char** av) {
		int a = 0, b = 1, c = 2, i, r[5];
		for(i = 0; i < 5; i++) {
			if( (r[i] = fork()) ) {
				a = getpid();
				srandom(a);
				b = random()%10;
				sleep(b);
				exit(a+b);
			}
		}
		i = 0;
		while(-1 != waitpid(r[i], &c, 0)) {
			printf("%d %d %d %d \n", a, b, r[i], WEXITSTATUS(c));
			i++;
		}

		return 0;
}