class Program
{
    static int Square(int i)
    {
        int sqr = i * i;
        return sqr;
    }

    static void Main()
    {
        int i = 5;
        Console.WriteLine(Square(i));

        Console.ReadKey();
    }
}
                                

Class Program
	Private Shared Function Square(i As Integer) As Integer
		Dim sqr As Integer = i * i
		Return sqr
	End Function

	Private Shared Sub Main()
		Dim i As Integer = 5
		Console.WriteLine(Square(i))

		Console.ReadKey()
	End Sub
End Class