NAME

ispunct — punctuation character test

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 or non-zero if the character tests true.

SEE ALSO

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”).

HISTORY

The ispunct() function first appeared in Version 7 AT&T UNIX.

CAVEATS

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