morozov.cpp

// for Morozov
void RetSignal(int status) {
    if (WIFEXITED(status))
        ;
    else if (WIFSIGNALED(status)) {
        printf("ERROR: return signal %d\n", WTERMSIG(status));
    }
    else if (WIFSTOPPED(status)) {
        printf("STOP: return signal %d\n", WSTOPSIG(status));
    }
}

// for Prohorenko
if (listen(s, 1) == -1) { perror("listen"); exit(1); }