isupper.c File Reference

#include "../ctype.h"

Functions
int	isupper (int c)
	Check if value is upper alphanumeric. More...

Function Documentation

isupper()

int isupper

(

int

c

)

Check if value is upper alphanumeric.

The isupper function tests for any character that is an uppercase letter or is one of a locale-specific set of characters for which none of iscntrl, isdigit, ispunct, or isspace is true. In the "C" locale, isupper returns true only for the uppercase letters.

Parameters

c	Value to check.

Returns

1 if true, 0 if false