NAME
ispunct —
punctuation character test
LIBRARY
library “libc”
SYNOPSIS
#include
<ctype.h>
int
ispunct(int
c);
int
ispunct_l(int
c, locale_t
loc);
DESCRIPTION
Theispunct()
function tests for any printing character except for space
(‘ ’) or a character for which
isalnum(3) is true. The value of the argument must be representable as
an unsigned char or the value of
EOF.
In the ASCII character set, this includes the following characters (with their numeric values shown in octal):
| 041 ``!'' | 042 ``"'' | 043 ``#'' | 044 ``$'' | 045 ``%'' |
| 046 ``&'' | 047 ``''' | 050 ``('' | 051 ``)'' | 052 ``*'' |
| 053 ``+'' | 054 ``,'' | 055 ``-'' | 056 ``.'' | 057 ``/'' |
| 072 ``:'' | 073 ``;'' | 074 ``<'' | 075 ``='' | 076 ``>'' |
| 077 ``?'' | 100 ``@'' | 133 ``['' | 134 ``\'' | 135 ``]'' |
| 136 ``^'' | 137 ``_'' | 140 ```'' | 173 ``{'' | 174 ``|'' |
| 175 ``}'' | 176 ``~'' |
The
ispunct_l()
function takes an explicit locale argument, whereas the
ispunct() function uses the current global or
per-thread locale.
RETURN VALUES
The ispunct() and
ispunct_l() functions return zero if the character
tests false and return non-zero if the character tests true.
COMPATIBILITY
The 4.4BSD extension of accepting
arguments outside of the range of the unsigned char
type in locales with large character sets is considered obsolete and may not
be supported in future releases. The iswpunct()
function should be used instead.
SEE ALSO
STANDARDS
The ispunct() function conforms to
ISO/IEC 9899:1990 (“ISO C90”).
The ispunct_l() function conforms to
IEEE Std 1003.1-2008 (“POSIX.1”).