using __STL_NEW_IO_NAMESPACE::basic_ostream; using __STL_NEW_IO_NAMESPACE::ostream; # ifndef __STL_NO_WIDE_STREAMS using __STL_NEW_IO_NAMESPACE::wostream; # endif using __STL_NEW_IO_NAMESPACE::endl; using __STL_NEW_IO_NAMESPACE::ends; using __STL_NEW_IO_NAMESPACE::flush;