getopt.h

linux下r的FTP源码,已经测试通过!

#ifndef _GETOPT_
#define _GETOPT_

int getopt(int argc, char **argv, char *optstring);

extern char *optarg;		// returned arg to go with this option
extern int optind;		// index to next argv element to process
extern int opterr;		// should error messages be printed?
extern int optopt;		//

#define BADCH ('?')

#endif // _GETOPT