getopt.h

开放源码的编译器open watcom 1.6.0版的源代码

#ifndef __GETOPT_H
#define __GETOPT_H

extern char *optarg;       /* argument of current option                    */
extern int   optind;       /* index of next argument; default=0: initialize */
extern int   opterr;       /* 0=disable error messages; default=1: enable   */
extern char *optswchar;    /* characters introducing options; default="-"   */

extern enum _optmode {
       GETOPT_UNIX,        /* options at start of argument list (default)   */
       GETOPT_ANY,         /* move non-options to the end                   */
       GETOPT_KEEP,        /* return options in order                       */
     } optmode;

int getopt (int argc, char **argv, const char *opt_str);

#endif