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(libc.info)Argp Example 1

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A Minimal Program Using Argp
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   This is perhaps the smallest program possible that uses argp.  It
won't do much except give an error messages and exit when there are any
arguments, and prints a rather pointless message for `--help'.

     /* Argp example #1 - a minimal program using argp */
     
     /* This is (probably) the smallest possible program that
        uses argp.  It won't do much except give an error
        messages and exit when there are any arguments, and print
        a (rather pointless) messages for -help. */
     
     #include <argp.h>
     
     int main (int argc, char **argv)
     {
       argp_parse (0, argc, argv, 0, 0, 0);
       exit (0);
     }