// Code stolen from getopt man page
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>

int
main (int argc, char *argv[])
{
  int flags, opt;
  int nsecs, tfnd;

  nsecs = 0;
  tfnd = 0;
  flags = 0;
  while ((opt = getopt (argc, argv, "nt:")) != -1) 
    {
      switch (opt) 
        {
          case 'n':
            flags = 1;
            break;
          case 't':
            nsecs = atoi (optarg);
            tfnd = 1;
            break;
          default: /* '?' */
            fprintf (stderr, "Usage: %s [-t nsecs] [-n] name\n",
                    argv[0]);
            exit (EXIT_FAILURE);
        } // switch
    } // while

  printf ("flags=%d; tfnd=%d; nsecs=%d; optind=%d\n",
         flags, tfnd, nsecs, optind);

  if (optind >= argc) 
    {
      fprintf (stderr, "Expected argument after options\n");
      exit (EXIT_FAILURE);
    }

  exit (EXIT_SUCCESS);
} // main