MirOS Manual: isalnum(3)

ISALNUM(3)                 BSD Programmer's Manual                  ISALNUM(3)

NAME

     isalnum - alphanumeric character test

SYNOPSIS

     #include <ctype.h>

     int
     isalnum(int c);

DESCRIPTION

     The isalnum() macro tests for any character for which isalpha(3) or
     isdigit(3) is true.

RETURN VALUES

     The isalnum() macro returns zero if the character tests false or non-zero
     if the character tests true.

SEE ALSO

     isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3),
     islower(3), isprint(3), ispunct(3), isspace(3), isupper(3), isxdigit(3),
     stdio(3), toascii(3), tolower(3), toupper(3), ascii(7)

STANDARDS

     The isalnum() function conforms to ANSI X3.159-1989 ("ANSI C").

CAVEATS

     The argument to isalnum() must be EOF or representable as an unsigned
     char; otherwise, the result is undefined.

MirOS BSD #10-current           June 29, 1991                                1

Generated on 2014-07-04 21:17:45 by $MirOS: src/scripts/roff2htm,v 1.79 2014/02/10 00:36:11 tg Exp $

These manual pages and other documentation are copyrighted by their respective writers; their source is available at our CVSweb, AnonCVS, and other mirrors. The rest is Copyright © 2002‒2014 The MirOS Project, Germany.
This product includes material provided by Thorsten Glaser.

This manual page’s HTML representation is supposed to be valid XHTML/1.1; if not, please send a bug report – diffs preferred.