wctype
Defined in header <wctype.h> |
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(since C95) |
Constructs a value of type wctype_t that describes a LC_CTYPE category of wide character classification. It may be one of the standard classification categories, or a locale-specific category, such as "jkanji".
Parameters
| str | - | C string holding the name of the desired category |
The following values of str are supported in all C locales:
value of str |
effect |
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"alnum" |
identifies the category used by iswalnum |
"alpha" |
identifies the category used by iswalpha |
"blank" |
identifies the category used by iswblank (C99) |
"cntrl" |
identifies the category used by iswcntrl |
"digit" |
identifies the category used by iswdigit |
"graph" |
identifies the category used by iswgraph |
"lower" |
identifies the category used by iswlower |
"print" |
identifies the category used by iswprint |
"space" |
identifies the category used by iswspace |
"upper" |
identifies the category used by iswupper |
"xdigit" |
identifies the category used by iswxdigit |
Return value
wctype_t object suitable for use with iswctype to classify wide characters according to the named category of the current C locale or zero if str does not name a category supported by the current C locale.
References
- C23 standard (ISO/IEC 9899:2023):
- 7.30.2.2.2 The wctype function (p: TBD)
- C17 standard (ISO/IEC 9899:2018):
- 7.30.2.2.2 The wctype function (p: TBD)
- C11 standard (ISO/IEC 9899:2011):
- 7.30.2.2.2 The wctype function (p: 452)
- C99 standard (ISO/IEC 9899:1999):
- 7.25.2.2.2 The wctype function (p: 398)
See also
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(C95)
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classifies a wide character according to the specified LC_CTYPE category (function) |
C++ documentation for wctype |
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