#include <iostream>
 #include <string>
 #include <tuple>

 int main(){

   std::cout << std::boolalpha << std::endl;

   std::tuple<std::string,int,float> tup1("first",3,4.17);
   std::tuple<std::string,int,double> tup2= std::make_tuple("second",4,1.1);

   std::cout << "tup1: "  << std::get<0>(tup1) << "," << std::get<1>(tup1) << "," << std::get<2>(tup1) << std::endl;
   std::cout << "tup2: "  << std::get<0>(tup2) << "," << std::get<1>(tup2) << "," << std::get<2>(tup2) << std::endl;

   std::cout << "tup1 < tup2: " << (tup1 < tup2) << std::endl;

   std::cout << std::endl;

   std::get<0>(tup2)= "Second";

   std::cout << "tup1: "  << std::get<0>(tup1) << "," << std::get<1>(tup1) << "," << std::get<2>(tup1) << std::endl;
   std::cout << "tup2: "  << std::get<0>(tup2) << "," << std::get<1>(tup2) << "," << std::get<2>(tup2) << std::endl;

   std::cout << "tup1 < tup2: " << (tup1 < tup2) << std::endl;

   std::cout << std::endl;
 }