command line processing library - getopt

Question

Can someone help me with the getopt function?

When I do the following in main:

char *argv1[] = {\"testexec\",\"-?\"};
char *argv2[] = {\"testexec\",\         


        

Answer 1

Is there any reason why you are not using getopt_long() instead? On most platforms, getopt() just calls _getopt_long() with a switch to disable long arguments. That's the case with almost every platform that I know of (still in use), including Linux, BSD and even emerging OS's like HelenOS -, I know, I was the one who ported getopt to its libc :)

It is much easier on ANYONE using your program to have long options at least until they get used to using it.

getopt_long() will allow you to use two (or more) option indexes that can stay 'live' after they are done processing arguments, only the internal (global, non-reentrant) one would have to be re-set which is no big deal.

This lets you easily compare the argument count to the number of options actually passed in both invocations with many other benefits .. please consider not using the antiquated interface.

Look at getopt.h, you'll see what I mean.