isalpha.c File Reference

#include "../ctype.h"

Functions
int	isalpha (int c)
	Check if value is letter. More...

Function Documentation

isalpha()

int isalpha

(

int

c

)

Check if value is letter.

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

Parameters

c	Value to check.

Returns

1 if true, 0 if false