/*
 * wait without doing anything for 4 seconds.
 *  Created on: Sep 22, 2016
 *      Author: Agustín J. González
 * usage: p2.child 
 */
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>

int main (void) {
   sleep(4);
   getchar();
   exit(0);
}