#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
int main()
{ int i;
for (i=0; i<3; i++)
if (fork() == 0) break;
fork();
printf("Soy el proceso PID %d y mi padre %d\n", getpid
(),getppid
()); }
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