Alex Roman

using System;
using System.IO;

/// <summary>
/// Summary description for Class1
/// </summary>
/// 

interface ITest
{
	void Boop();
}

public class Test : ITest
{
	public Test()
	{
	}

	public void Boop()
	{
		Console.WriteLine("Bah");
	}
}

public class Meerkat : ITest
{
	public Meerkat()
	{
	}

	public void Boop()
	{
		Console.WriteLine("Bofoffhgfd");
	}
}

public class Class1
{
	public void Go()
	{
		Meerkat test1 = new Meerkat();
		Test test2 = new Test();

		Testy(test1);
		Testy(test2);
		Testy("hello");
	}

	public static void Main()
	{
		new Class1().Go();
	}

	public void Testy(object o)
	{
		if (o is ITest)
			(o as ITest).Boop();
	}
}