pid_t PPID = getpid();          //  Get PID of parent process
    for (int i = 0; i < n; i++)
    {
        pid_t ppid = getppid();     //  Get PPID of current process running
        if (ppid == PPID)           //  Sleep child
        {
            sleep(10);
            exit(-1);
        }

        pid_t new_pid = fork();
        if (new_pid != 0)           // Print process id only in parent process
            printf("# New child created, pid: %d, ppid: %d\n", new_pid, getppid());
    }