|
ISPUNCT(3) |
Library Functions Manual |
ISPUNCT(3) |
NAME
ispunct — punctuation character test
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <ctype.h>
int
ispunct(int c);
DESCRIPTION
The
ispunct() function tests for any printing character except space (' ') or a character for which
isalnum(3) is true.
RETURN VALUES
The ispunct() function returns zero if the character tests false and returns non-zero if the character tests true.
SEE ALSO
ctype(3),
isalnum(3),
isalpha(3),
isascii(3),
isblank(3),
iscntrl(3),
isdigit(3),
isgraph(3),
islower(3),
isprint(3),
isspace(3),
isupper(3),
isxdigit(3),
stdio(3),
toascii(3),
tolower(3),
toupper(3),
ascii(7)
STANDARDS
The ispunct() function conforms to ANSI X3.159-1989 (“ANSI C89”).
CAVEATS
The argument to
ispunct() must be
EOF or representable as an
unsigned char; otherwise, the behavior is undefined. See the
CAVEATS section of
ctype(3) for more details.