### getargs demo

#include <unistd.h>
#include <stdio.h>

int main (int argc, char *argv[])
{
       int ch;
       int avgSec = 0;

       if (argc == 1) {
               printf ("You specified no parameters.\n");
       }

       while ((ch = getopt(argc, argv, "a:fhm:z")) != -1) {
               switch (ch) {
                       case 'a':
                               printf ("You specified the -a option ");
                               printf ("with the parameter \"%s\".\n", optarg);
                               avgSec = atoi(optarg);
                               printf ("Will run for %d seconds and calculate avg fps.\n", avgSec);
                               break;
                       case 'f':
                               printf ("You specified the -f option.\n");
                               printf ("Starting in fullscreen mode.\n");
                               break;
                       case 'h':
                               printf ("You specified the -h option.\n");
                               printf ("Usage info goes here.\n");
                               break;
                       case 'm':
                               printf ("You specified the -m option ");
                               printf ("with the parameter \"%s\".\n", optarg);
                               //printf ("Starting in mode %d.\n", atoi(optarg));
                               break;
                       case 'z':
                               printf ("You specified the -z option.\n");
                               printf ("Starting in zoomed (windowed) mode.\n");
                               break;
                       default:
                               printf ("You specified a parameter I don't know about.\n");
                               break;
               }
       }
       argc -= optind;
       argv += optind;

       return avgSec;
}