#### 26.3.11.1 A Minimal Program Using Argp ¶

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

    /* 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 <stdlib.h>
    #include <argp.h>

    int
    main (int argc, char **argv)
    {
      argp_parse (0, argc, argv, 0, 0, 0);
      exit (0);
    }