std::wctype
STD：：wctype
| Defined in header | | |
|---|---|---|
| std::wctype_t wctype( const char* str | | |
构造类型的值。std::wctype_t描述LC[医]宽字符分类的类型分类。它可能是标准分类类别之一，也可能是特定于地区的类别，例如"jkanji"...
参数
| str | - | C string holding the name of the desired category |
|---|
的下列值str在所有C语言环境中都支持：
| value of str | effect |
|---|---|
| "alnum" | identifies the category used by std::iswalnum |
| "alpha" | identifies the category used by std::iswalpha |
| "blank" | identifies the category used by std::iswblank (C++11) |
| "cntrl" | identifies the category used by std::iswcntrl |
| "digit" | identifies the category used by std::iswdigit |
| "graph" | identifies the category used by std::iswgraph |
| "lower" | identifies the category used by std::iswlower |
| "print" | identifies the category used by std::iswprint |
| "space" | identifies the category used by std::iswspace |
| "upper" | identifies the category used by std::iswupper |
| "xdigit" | identifies the category used by std::iswxdigit |
返回值
std::wctype_t对象适合与std::iswctype根据当前C语言环境的命名类别或0 if对宽字符进行分类str不命名当前C语言环境支持的类别。
另见
| iswctype | classifies a wide character according to the specified LC_CTYPE category (function) |
|---|
c wctype文档
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