[C/C++] tuple

#include <iostream>
#include <tuple>
using namespace std;

int main()
{
    std::tuple<int, char> foo(10, 'x');

    auto bar = std::make_tuple("text", 3.1, 14, 'y');

    std::get<2>(bar) = 100;

    int myint;
    char mychar;

    std::tie(myint, mychar) = foo;
    cout << "myint = " << myint << ", mychar = " << mychar << endl;

    std::tie(std::ignore, std::ignore, myint, mychar) = bar;
    cout << "myint = " << myint << ", mychar = " << mychar << endl;

    mychar = std::get<3>(bar);

    std::get<0>(foo) = std::get<2>(bar);

    std::get<1>(foo) = mychar;

    std::cout << "foo contains: ";
    std::cout << std::get<0>(foo) << ' ';
    std::cout << std::get<1>(foo) << '\n';

    return 0;
}

#include <iostream>
#include <tuple>
using namespace std;

int main()
{
    auto mytuple = std::make_tuple(10, 'a');

    std::tuple_element<0, decltype(mytuple)>::type first = std::get<0>(mytuple);
    std::tuple_element<1, decltype(mytuple)>::type second = std::get<1>(mytuple);

    cout << "mytuple contains: " << first << " and " << second << '\n';

    return 0;
}

#include <iostream>
#include <tuple>
using namespace std;

int main()
{
    std::tuple<int, char, double> mytuple(10, 'a', 3.14);

    cout << "mytuple has ";
    cout << std::tuple_size<decltype(mytuple)>::value;
    cout << " elements.\n";

    return 0;
}