getopt.h File Reference

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Data Structures
struct	option
Defines
#define	no_argument   0
#define	required_argument   1
#define	optional_argument   2
Functions
int	getopt (int, char *const *, const char *)
int	getopt_long (int, char **, char *, struct option *, int *)
Variables
int	opterr
int	optind
int	optopt
int	optreset
char *	optarg

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Define Documentation

#define no_argument   0

#define optional_argument   2

#define required_argument   1

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Function Documentation

int getopt	(	int	,
		char *const *	,
		const char *
	)

argument associated with option

int getopt_long	(	int	,
		char **	,
		char *	,
		struct option *	,
		int *
	)

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Variable Documentation

char* optarg

For communication from `getopt' to the caller. When `getopt' finds an option that takes an argument, the argument value is returned here. Also, when `ordering' is RETURN_IN_ORDER, each non-option ARGV-element is returned here.

int opterr

Callers store zero here to inhibit the error message for unrecognized options.

int optind

XXX 1003.2 says this must be 1 before any call.

int optopt

Set to an option character which was unrecognized. This must be initialized on some systems to avoid linking in the system's own getopt implementation.

int optreset

character checked for validity

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