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std::basic_ios::widen

性病：基本[医]监督办：：扩大

char_type widen( char c ) const;​​

转换字符c在当前区域设置中与其等效。结果被转换为char如果需要，可以使用流中的字符类型。

有效呼叫std::use_facet<std::ctype<char_type>>(getloc()).widen(c)...

参数

c-character to convert

返回值

字符转换为char_type...

另见

narrownarrows characters (public member function)
do_widen virtualconverts a character or characters from char to charT (virtual protected member function of std::ctype)
btowcwidens a single-byte narrow character to wide character, if possible (function)

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