C++ tuple make_tuple function

Introduction

We can create a tuple using the std::make_tuple function: 

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

int main() /*from   w  w w.j  a  v  a  2s  .  c o m*/
{ 
     auto mytuple = std::make_tuple<int, double, std::string>(123, 3.14, "Hello World."); 
     std::cout << "The first tuple element is: " << std::get<0>(mytuple) << '\n'; 
     std::cout << "The second tuple element is: " << std::get<1>(mytuple)<< '\n'; 
     std::cout << "The third tuple element is: " << std::get<2>(mytuple) << '\n'; 
}

Instead of typing a lengthy tuple type, which is std::tuple<int, double, std::string>, we used the auto specifier to deduce the type name for us.




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