isalnum.c

来自「mips架构的bootloader,99左右的版本 但源代码现在没人更新了」· C语言 代码 · 共 19 行

/*************************************************************
 * File: lib/isalnum.c
 * Purpose: Part of C runtime library
 * Author: Phil Bunce ([e-mail])
 * Revision History:
 *	970304	Start of revision history
 */

/** isalnum(c) returns true if c is alphanumeric */
isalnum(c)
int c;
{

if (isalpha(c)) return(1);
if (isdigit(c)) return(1);
return(0);
}