int main (int argc, char **argv) {
  char *name = argv[0];
  int child_pid = fork();
  if (child_pid == 0) {
    printf("Child of %s is %d\n", name, child_pid);
    return 0;
  } else {
    printf("My child is %d\n", child_pid);
    return 0;
  }
}