Mine

int
main (int argc, char *argv[])
{
  niter = 2000;

  /* Parse the command line */
  argv[0] = appname;
  while (1)
    {
      int option_index = 0, c;
      static struct option long_options[] = {
	{"help", 0, 0, 'h'},
	{"version", 0, 0, 'V'},
	{"niter", 0, 0, 'n'},
	{0, 0, 0, 0}
      };

      c = getopt_long (argc, argv, "hVn:", long_options, &option_index);
      if (c == -1)
	break;