#include <iostream>
    using namespace std;
    template<typename T> 
    inline T square(T num1)
    {
        T Res;
        Res = num1 * num1;
        return Res;
    };
    int main()
    {
        int k, kk;
        float num1, num2;
        double num3, num4;
        k = 3;
        num1 = 2.3;
        num3 = 4.2;
        kk = square(k);
        cout << k << " "  << kk << endl;
        num4 = square(num3);
        cout << num3 << " " << num4 << endl;
    }