isalnum man page on BSDi
[printable version]
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 is-
digit(3) is true.
RETURN VALUES
The isalnum() macro returns zero if the character tests false and returns
non-zero if the character tests true.
SEE ALSO
isascii(3), isalnum(3), isalpha(3), iscntrl(3), isdigit(3),
isgraph(3), islower(3), isprint(3), ispunct(3), isspace(3),
isupper(3), isxdigit(3), toascii(3), tolower(3), toupper(3),
stdio(3) ascii(7)
STANDARDS
The isalnum() function conforms to ANSI C X3.159-1989 (``ANSI C '').
BSDI BSD/OS June 29, 1991 1
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