[C] How to make option

    /* Skip the executable name and start with the arguments. */
    index = 1;

    /* Parse all the options. */
    while (index < argc)
    {
        if (strcmp(argv[index], "-H") == 0)
        {
            index = index + 2;
        }
        else if (strcmp(argv[index], "-plugin") == 0)
        {
            print_usage();
            index = index + 1;        
        }
        else
        {
            /* This could be a plugin specific option. */

        }
    }

Usage :

binfile -n          <-- index = index + 1;
binfile -n happy    <-- index = index + 2;