using System;

public class Program

{

    // Method 1

    static int square(int i)

    {

        return i*i;

    }

    // Method 2

    static double square(double i)

    {

        return i*i;

    }

    public static void Main()

    {

        Console.WriteLine(square(2));

        Console.WriteLine(square(2.2));

​

    }

}