{ return g-h; } int main() { map<string,function<double (double, double)>> all{ {"+",add}, {"-",minuss}, {"*",multiply}, {"/",divide} }; istream_iterator<int> in(cin); istream_iterator<string> 分享19赞 arduino吧 面包zdk 【arduino】GPS模块最近楼主在使gps模块,有大神来...