Question

How to get tuple values in C++

Answer 1

#include <iostream>
#include <tuple> 
  
std::tuple<int, double, std::string> func() {
    std::tuple<int, double, std::string> values(23, 3.14, "c++");
   
    return values;
}
   
int main()
{
    std::tuple<int, double, std::string> t = func();
   
    int n = std::get<0>(t);
   
    double d = std::get<1>(t);
   
    std::string s = std::get<2>(t);
   
    std::cout << n << std::endl;
    std::cout << d << std::endl;
    std::cout << s << std::endl;
  
    const int idx = 1;
    std::cout << std::get<idx>(t);
   
    return 0;
}
  
  
  
/*
run:
  
23
3.14
c++
3.14
  
*/

 

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Answer 2

#include <iostream>
#include <tuple> 
 
using namespace std; 
 
int main()
{
    tuple <char, int, float, string> t; 
 
    t = make_tuple('z', 89, 3.14, "c++"); 
   
    cout << get<0>(t) << endl;
    cout << get<1>(t) << endl;
    cout << get<2>(t) << endl;    
    cout << get<3>(t) << endl;
     
    return 0;
}
 
 
 
/*
run:
 
z
89
3.14
c++
 
*/

 

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