[LC++]getopt-question
robert at ncdesigns.net
robert at ncdesigns.net
Fri Dec 13 01:22:01 UTC 2002
On Thu, 12 Dec 2002, Julien Patrick Claassen wrote:
> Hello all!
> I want to call a program with some options. But there are some which exclude
> one another. I.e.: You use either -r or -s, but not both. How can I do it
> nicely with using getopt_long?
> Thanks for any help!
> Kindest regards
> Julien
>
It's rather quite simple, here's pseudocode
char *val_r;
char *val_s;
val_r = val_s = NULL;
while (1)
{
char c = getopt();
if (c == -1)
break;
switch (c)
{
case 'r':
val_r = optarg;
break;
case 's':
val_s = optarg;
break;
}
}
if ((val_r != NULL) && (val_s != NULL))
exit_func();
Of course you could write this a little simpler, but it's more readable.
Robert
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