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Mac OS X / Darwin man pages : ispunct (3)
ispunct (3)

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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 for space (` `) or a character for which isalnum(3) is true. For single C chars locales (see multibyte(3) ) the value of the argument is 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 ``~''

Return Values

The ispunct() function returns zero if the character tests false and returns non-zero if the character tests true.

Compatibility

Although ispunct() accepts arguments outside of the range of the unsigned char type in locales with large character sets, this is a 4.4BSD extension and the iswpunct() function should be used instead for maximum portability.

See Also

ctype(3) , iswpunct(3) , multibyte(3) , ascii(7)

Standards

The ispunct() function conforms to ISO/IEC 9899:1990 (``ISO C89'').

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