6 main (int argc
, char **argv
)
18 while ((c
= getopt (argc
, argv
, "abc:")) != -1)
32 fprintf (stderr
, "Unknown option `-%c'.\n", optopt
);
35 "Unknown option character `\\x%x'.\n",
44 printf ("aflag = %d, bflag = %d, cvalue = %s\n", aflag
, bflag
, cvalue
);
46 for (index
= optind
; index
< argc
; index
++)
47 printf ("Non-option argument %s\n", argv
[index
]);