tuple test

#include <iostream>
#include <tuple>

std::tuple<int, int, int, int> add_sub_mul_div(int a, int b);

int main()
{
    int a, s, m, d;

    std::forward_as_tuple(a, s, m, d) = add_sub_mul_div(40, 50);

    std::cout << "a = " << a << std::endl;
    std::cout << "s = " << s << std::endl;
    std::cout << "s = " << m << std::endl;
    std::cout << "s = " << d << std::endl;

}

std::tuple<int, int, int, int> add_sub_mul_div(int a, int b)
{
    return std::make_tuple(
        a + b,
        a - b,
        a * b,
        a / b
    );
}