NAME¶

SDL_isalpha - Query if a character is alphabetic (a letter).

HEADER FILE¶

Defined in SDL3/SDL_stdinc.h

SYNOPSIS¶

#include "SDL3/SDL.h"

int SDL_isalpha(int x);

DESCRIPTION¶

WARNING : Regardless of system locale, this will only treat ASCII values for English 'a-z' and 'A-Z' as true.

FUNCTION PARAMETERS¶

x

character value to check.

RETURN VALUE¶

Returns non-zero if x falls within the character class, zero otherwise.

THREAD SAFETY¶

It is safe to call this function from any thread.

AVAILABILITY¶

This function is available since SDL 3.1.3.