#include <iostream>
#include <sstream>
#include <tuple>

template<typename T, typename CharT>
T extract(std::basic_istream<CharT>& is) {
    T val;
    is >> val;
    return val;
}

void print(const std::tuple<int, long, double>& t) {
    using std::cout;
    cout << std::get<0>(t) << " " << std::get<1>(t) << " " << std::get<2>(t) << std::endl;
}

int main()
{
    std::stringstream ss1;
    std::stringstream ss2;
    ss1 << 1 << " " << 2 << " " << 3;
    ss2 << 1 << " " << 2 << " " << 3;
    auto compilerOrder    = std::tuple<int, long, double>( extract<int>(ss1), extract<long>(ss1), extract<double>(ss1) );
    auto leftToRightOrder = std::tuple<int, long, double>{ extract<int>(ss2), extract<long>(ss2), extract<double>(ss2) };
    print(compilerOrder);
    print(leftToRightOrder);
}