foo.cc: In function 'int main()':
foo.cc:11:28: error: no match for 'operator*' (operand types are 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}' and 'int')
    cout<<"快递费为:"<<s*5<<"元";
                           ~^~

自豪的采用 HydroJudge 进行评测(github.com/hydro-dev/HydroJudge)

正在同步测试数据，请稍后