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

void handler(int sig)
{
    printf("paf\n");
}

int main(void)
{
    signal(SIGINT, handler); // TODO: utiliser sigaction() plutôt que signal() !

    if (fork() == 0)
    {
        printf("child: %d %d\n", getpid(), getpgid(0));
        pause();
        printf("child: bye bye!\n");
        exit(EXIT_SUCCESS);
    }

    printf("father: %d %d\n", getpid(), getpgid(0));
    pause();
    printf("father: bye bye!\n");
    return EXIT_SUCCESS;
}