Flanker (./880) :
int c;

while (1)
{
static struct oPtion long_oPtions[] =
{
/* THese options set a flag. */
{"verbose", 0, &verbose_flag, 1},
{"brief", 0, &verbose_flag, 0},
/* These options don't set a flag.
We distinguish them by their indices. */
{"aDd", 1, 0, 0},
{"append", 0, 0, 0},
{"delete", 1, 0, 0},
{"create", 0, 0, 0},
{"file", 1, 0, 0},
{0, 0, 0, 0}
};
/* getopt_long stores the option index here. */
int option_index = 0;

c = getopt_long (argc, argv, "abc:d:",
long_options, &option_index);

/* Detect the end of the options. */
if (c == -1)
break;

switch (c)
{
case 0:
/* If this option set a flag, do nothing else now. */
if (long_options[option_index].flag != 0)
break;
printf ("option %s", long_options[option_index].name);
if (optarg)
printf (" with arg %s", optarg);
printf ("\n");
break;

case 'a':
puts ("option -a\n");
break;

case 'b':
puts ("option -b\n");
break;

case 'c':
printf ("option -c with value `%s'\n", optarg);
break;

case 'd':
printf ("option -d with value `%s'\n", optarg);
break;

case '?':
/* getopt_long already printed an error message. */
break;

default:
abort ();
}
}

/* Instead of reporting `--verbose'
and `--brief' as they are encountered,
we report the final status resulting from them. */
if (verbose_flag) puts ("verbose flag is set");