Standard C++ Library Reference ISO/IEC (VERSION3)

wcin
extern wistream wcin;
The object controls extractions from the standard input as a wide stream. Once the object is
constructed, the call wcin.tie() returns &wcout.
wclog
extern wostream wclog;
The object controls buffered insertions to the standard error output as a wide stream.
wcout
extern wostream wcout;
The object controls insertions to the standard output as a wide stream.
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