Category : C Source Code
Archive   : CSRC2.ZIP
Filename : ISALNU.C

 
Output of file : ISALNU.C contained in archive : CSRC2.ZIP
/*
* i s a l n u . c
*/

/*)LIBRARY
*/

#ifdef DOCUMENTATION

title isalnum Test for Upper-case Alphabetic
index Test for upper-case alphabetic
synopsis
.s.nf
isalnum(c);
int c;
.s.f
Description

Return non-zero if c is an alphanumeric character, 0 otherwise.

Bugs

The value is defined only if isascii(c) is TRUE.

#endif

#include
#ifdef isalnum
#undef isalnum
#endif

int
isalnum(c)
int c;
{
return (_ctype_[c & 0177] & (_U | _L | _D));
}


  3 Responses to “Category : C Source Code
Archive   : CSRC2.ZIP
Filename : ISALNU.C

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/