Parsing '?' in getopt

Question

void display(char * str){
   printf(\"%s: Missing file\\n\", str);
}

int main(int argc, char **argv)
{

    int longIndex, opt = 0;
    const char *optString = \"h?         


        

Answer 1

If you include -? with --help on your help message, leave the question mark out of your call to getopt, leave it out of the case option, and make sure that --help is the first case option in your list, the question mark works as you'd want it to.