class SQLite_exception { int errno; std::string errmsg;public: /* Errors I get here:`_errno' cannot be used as a functionanachronistic old style base class initializerunnamed initializer for `SQLite_exception', which has no base classesparse error before `;' token */ SQLite_exception(int _errno, const std::string &_errmsg) : errno(_errno), errmsg(_errmsg) { } friend std::ostream &operator<<(std::ostream &out, const SQLite_exception &exception) { out << exception.errmsg; if (errno) out << " [" << errno << "]"; out << std::endl; return out; }};