ISSPACE(3) BSD Programmer's Manual ISSPACE(3)NAMEisspace - white-space character test
SYNOPSIS
#include <ctype.h>
int
isspace(int c);
DESCRIPTION
The isspace() function tests for the standard white-space characters for
which isalnum(3) is false. The standard white-space 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 white-
space characters.
RETURN VALUES
The isspace() macro returns zero if the character tests false and returns
non-zero if the character tests true.
SEE ALSOisascii(3), isalnum(3), isalpha(3), iscntrl(3), isdigit(3),
isgraph(3), islower(3), isprint(3), ispunct(3), isupper(3),
isxdigit(3), toascii(3), tolower(3), toupper(3), stdio(3)ascii(7)STANDARDS
The isspace() function conforms to ANSI C X3.159-1989 (``ANSI C '').
BSDI BSD/OS July 31, 1991 1