using System;

public class Program

{

    public static void Main()

    {

        IInterfaceExample interfacePointingChild = new Child();

        interfacePointingChild.Test();

​

    }

}

​

public interface IInterfaceExample

{

    void Test(){

        Console.WriteLine("This is the interface default implementation");

    }

}

​

public abstract class Parent : IInterfaceExample

{

 public void Test()

 {

  Console.WriteLine("This is the Parent class implementation");

 }

}

​

public class Child : Parent

{

​

}