Two Type Parameters, One Class Template

1#include <iostream>
2#include <string>
3 
4template <typename K, typename V>
5class Pair {
6    K m_key;
7    V m_value;
8public:
9    Pair(K key, V value) : m_key(key), m_value(value) {}
10    void print() const {
11        std::cout << m_key << " -> " << m_value << "\n";
12    }
13};
14 
15int main() {
16    Pair<std::string, int> age("Ana", 30);
17    Pair<int, double> price(7, 2.25);
18    Pair<char, char> letters('a', 'b');
19    age.print();
20    price.print();
21    letters.print();
22    Pair<int, int> whole(1, 2);
23    whole.print();
24    return 0;
25}