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  • Created by Former user, last modified by Former user on Feb 12, 2014
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Determines whether a character is an alphanumeric character.

Files

lib_ascii.h/lib_ascii.c

Prototypes

Arguments

ch

Character to examine.

Returned Value

DEF_YES,

if character is an alphanumeric character;

DEF_NO,

if character is not an alphanumeric character.

Required Configuration

None.

Notes / Warnings

ISO/IEC 9899:TC2, Section 7.4.1.1.(2) states that “isalnum() returns true only for the characters for which isalpha() or isdigit() is true”.

Example Usage

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