jagomaniak wrote:
> The program is written in C. :) I have the parameters check in my
> program already, I'm just struggling with how to write that loop.
>
> char *c = argv[2];
>
> while (*argv[2])
> {
> if ((isupper(*argv[2])) || (isdigit(*argv[2])))
> { continue; }
> else
> printf("Second parameter includes forbidden characters");
> return EXIT_FAILURE;
> }
>
> But that doesn't work.
You forgot to increment.
You might prefer to do something more like:
char *c;
for (c = argv[2]; *c && (isupper(*c) || isdigit(*c)); c++);
if (*c)
{
printf("Second parameter includes forbidden characters.\n");
return EXIT_FAILURE;
}
Instead.
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