Returning two variables in a C++ function [duplicate]

Question

I would like to return two double variables: when calling a function that I have created. According to some tutorials (which deal with the basics of the C++), I would be unable to do that.

Is there a way to do so?

Answer 1

You could write a simple struct that holds the variables and return it, or use an std::pair or std::tuple:

#include <utility>  std::pair<double, double> foo() {   return std::make_pair(42., 3.14); }  #include <iostream> #include <tuple> // C++11, for std::tie int main() {   std::pair<double, double> p = foo();   std::cout << p.first << ", " << p.second << std::endl;    // C++11: use std::tie to unpack into pre-existing variables   double x, y;   std::tie(x,y) = foo();   std::cout << x << ", " << y << std::endl;    // C++17: structured bindings   auto [xx, yy] = foo(); // xx, yy are double }