void spawnChildren( unsigned int n )
{
    /* avoid 'unused parameter' warning */
    (void)n;

    for (unsigned int i = 0; i < n; ++i) {
    int pid = fork();
    if (pid == 0) {
      printf("%d\n", getpid());
      break;
    }
    else
      printf("I am the parent process of: %d\n", pid);
    }
}