ispunct, iswpunct, _ispunct_l, _iswpunct_l
Determines whether an integer represents a punctuation character.
Syntax
int ispunct(
int c
);
int iswpunct(
wint_t c
);
int _ispunct_l(
int c,
_locale_t locale
);
int _iswpunct_l(
wint_t c,
_locale_t locale
);
Parameters
c
Integer to test.
locale
The locale to use.
Return value
Each of these routines returns nonzero if c is a particular representation of a punctuation character. ispunct returns a nonzero value for any printable character that isn't a space character or a character for which isalnum is nonzero. iswpunct returns a nonzero value for any printable wide character that isn't the space wide character or a wide character for which iswalnum is nonzero. Each of these routines returns 0 if c doesn't satisfy the test condition.
The result of the test condition for the ispunct function depends on the LC_CTYPE category setting of the locale. For more information, see setlocale, _wsetlocale. The versions of these functions that don't have the _l suffix use the current locale for any locale-dependent behavior; the versions that do have the _l suffix are identical except that they use the locale that's passed in instead. For more information, see Locale.
The behavior of ispunct and _ispunct_l is undefined if c isn't EOF or in the range 0 through 0xFF, inclusive. When a debug CRT library is used and c isn't one of these values, the functions raise an assertion.
Generic-text routine mappings
| TCHAR.H routine | _UNICODE and _MBCS not defined |
_MBCS defined |
_UNICODE defined |
|---|---|---|---|
_istpunct |
ispunct |
_ismbcpunct |
iswpunct |
Remarks
By default, this function's global state is scoped to the application. To change this behavior, see Global state in the CRT.
Requirements
| Routine | Required header |
|---|---|
ispunct |
<ctype.h> |
iswpunct |
<ctype.h> or <wchar.h> |
_ispunct_l |
<ctype.h> |
_iswpunct_l |
<ctype.h> or <wchar.h> |
For more compatibility information, see Compatibility.