iswalnum()

Test a wide character to see if it's alphanumeric

Synopsis:

#include <wctype.h>

int iswalnum( wint_t wc );

Arguments:

wc

The wide character you want to test.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The iswalnum() function tests if the argument wc is an alphanumeric wide character of the class alpha or digit. In the C locale, they're a to z, A to Z, 0 to 9.

Returns:

A nonzero value if the character is a member of the class alpha or digit, or 0 otherwise.

Classification:

ANSI, POSIX 1003.1

Caveats:

The result is valid only for wchar_t arguments and WEOF.

See also:

setlocale()

"Character manipulation functions" and "Wide-character functions" in the summary of functions chapter.