std::basic_ios::widen

From cppreference.com
char_type widen( char c ) const;

Converts a character c to its equivalent in the current locale. The result is converted from char to character type used within the stream if needed.

Effectively calls std::use_facet< std::ctype<char_type> >(getloc()).widen(c).

[edit] Parameters

c - character to convert

[edit] Return value

Character converted to char_type

[edit] See also

narrows characters
(public member function)
[virtual]
converts a character or characters from char to charT
(virtual protected member function of std::ctype)
widens a single-byte narrow character to wide character, if possible
(function)