CPP

tuple c++

#include <tuple>

std::tuple<char, int, bool> my_tuple = {'H', 56, false};

c++ tuple

std::tuple<int, int> foo_tuple() 
{
  return {1, -1};  // Error until N4387
  return std::tuple<int, int>{1, -1}; // Always works
  return std::make_tuple(1, -1); // Always works
}

c++ tuple

#include <tuple>

std::tuple<int, int> foo_tuple() 
{
  return {1, -1};  // Error until N4387
  return std::tuple<int, int>{1, -1}; // Always works
  return std::make_tuple(1, -1); // Always works
}

c++ tuple

std::tuple<types...>

std::make_tuple(vals...)

c++ tuple example

#include <tuple>

....

std::tuple<int, int, int> tpl;

std::get<0>(tpl) = 1;
std::get<1>(tpl) = 2;
std::get<2>(tpl) = 3;

C++ tuple

// C++ code to demonstrate tuple, get() and make_pair()
#include<iostream>
#include<tuple> // for tuple
using namespace std;
int main()
{
    // Declaring tuple
    tuple <char, int, float> geek;
  
    // Assigning values to tuple using make_tuple()
    geek = make_tuple('a', 10, 15.5);
  
    // Printing initial tuple values using get()
    cout << "The initial values of tuple are : ";
    cout << get<0>(geek) << " " << get<1>(geek);
    cout << " " << get<2>(geek) << endl;
  
    // Use of get() to change values of tuple
    get<0>(geek) = 'b';
    get<2>(geek) =  20.5;
  
     // Printing modified tuple values
    cout << "The modified values of tuple are : ";
    cout << get<0>(geek) << " " << get<1>(geek);
    cout << " " << get<2>(geek) << endl;
  
    return 0;
}