ISSPACE(3) OpenBSD Programmer's Manual ISSPACE(3)NAME
isspace - whitespace character test
SYNOPSIS
#include <ctype.h>
int
isspace(int c);
DESCRIPTION
The isspace() function tests for the standard whitespace characters for
which isalnum(3) is false. The standard whitespace characters are the
following:
` ' Space character.
\f Form feed.
\n New-line.
\r Carriage return.
\t Horizontal tab.
\v And vertical tab.
In the C locale, isspace() returns true only for the standard whitespace
characters.
RETURN VALUES
The isspace() macro returns zero if the character tests false or non-zero
if the character tests true.
SEE ALSOisalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3),
isgraph(3), islower(3), isprint(3), ispunct(3), isupper(3), isxdigit(3),
stdio(3), toascii(3), tolower(3), toupper(3), ascii(7)STANDARDS
The isspace() function conforms to ANSI X3.159-1989 (``ANSI C'').
CAVEATS
The argument to isspace() must be EOF or representable as an unsigned
char; otherwise, the result is undefined.
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9