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

argv1 and 2 must end in 0:

char* argv1[] = {"par1", "par2", 0};

Edit: OK, I read the getopt man page and I found this:

The variable optind is the index of the next element to be processed in argv. The system initializes this value to 1. The caller can reset it to 1 to restart scanning of the same argv, or when scanning a new argument vector.

So, making optind=1 between the two calls at getopt makes it work as expected.