getopt.h

#ifndef __GETOPT_H__
#define __GETOPT_H__
 
#ifdef __cplusplus
extern "C" {
#endif
 
extern int opterr;      /* if error message should be printed */
extern int optind;      /* index into parent argv vector */
extern int optopt;      /* character checked for validity */
extern int optreset;        /* reset getopt */
extern char *optarg;        /* argument associated with option */
 
struct option
{
  const char *name;
  int has_arg;
  int *flag;
  int val;
};
 
#define no_argument       0
#define required_argument 1
#define optional_argument 2
 
int getopt(int, char**, const char*);
int getopt_long(int, char**, const char*, const struct option*, int*);
 
#ifdef __cplusplus
}
#endif
 
#endif /* __GETOPT_H__ */