#ifdef ONLY_FOR_DEMONSTRATION_PURPOSES
//[default_converter_declaration_simple
-struct boost::cnv::by_default : public boost::cnv::cstream {};
+struct boost::cnv::by_default : boost::cnv::cstream {};
//]
#endif
//[default_converter_declaration_formatted
-struct boost::cnv::by_default : public boost::cnv::cstream
+struct boost::cnv::by_default : boost::cnv::cstream
{
by_default() { (*this)(std::uppercase)(std::hex); }
};