What is the tuple class in C++

This code uses the vector container I have used before with another example, please check or search in my blog.

We can store two value items using a "tuple". The tuple class is simple, you declare a list of the types of items in the tuple object in the declaration between the angle brackets. So the tuple<string, int> declaration says that the object will hold a string and an integer.

The make_tuple function is provided by the C++ Standard Library and will create a tuple object containing 2 values.

The push_back function will put the item into the vector container.

You can hold a lot of things in the tuple function
Ex: tuple<string, int, string>;
Ex: tuple<char, string, int, string>;

Finally, the "auto" keyword means that that compiler should create a variable with the type of the data that is assigned to it.

	#include <iostream>
	#include <string>
	#include <vector>
	#include <tuple>
	using namespace std;
	int main()
	{
	vector<tuple<int, string, string>> mystudents;
	mystudents.push_back(make_tuple(1, "John", "New York"));
	mystudents.push_back(make_tuple(2, "Marry", "Houston"));
	mystudents.push_back(make_tuple(3, "Paul", "Boston"));
	mystudents.push_back(make_tuple(4, "Peter", "Cincinnati"));
	//Using without auto keyword
	for (tuple<int, string, string> student : mystudents)
	{
	cout << get<0>(student) << " " << get<1>(student) << " " << get<2>(student) << endl;
	}
	//Using auto keyword
	for (auto student : mystudents)
	{
	cout << get<0>(student) << " " << get<1>(student) << " " << get<2>(student) << endl;
	}
	system("pause");
	return 0;
	}

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What is the tuple class in C++