wostream
Creates a type from basic_ostream that is specialized on wchar_t and char_traits specialized on wchar_t.
typedef basic_ostream<wchar_t, char_traits<wchar_t> > wostream;
Remarks
The type is a synonym for template class basic_ostream, specialized for elements of type wchar_t with default character traits.
Requirements
Header: <ostream>
Namespace: std