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


int main ()
{
	pid_t pid, wait_pid;
	pid = fork();
	if (pid<0) perror ("fork"), exit(1);
	if (pid==0) {
		printf ("Child: My PID is %d\n", (int)getpid());
		exit(0);
	} else {
		printf ("Parent: My PID is %d\n", (int)getpid());

		// Neu: warte zuerst auf das Ende des Kindprozesses
		wait_pid = wait(NULL);
		if(wait_pid < 0) perror("wait"), exit(2);

		sleep(30);
	}
	return 0;
}