C++ has std::clog (http://www.cplusplus.com/reference/iostream/clog/ http://www.cplusplus.com/reference/iostream/clog/) but most people haven't heard of it and

C++ has std::clog (http://www.cplusplus.com/reference/iostream/clog/ http://www.cplusplus.com/reference/iostream/clog/) but most people haven't heard of it and it maps to stderr anyway.