using System;

public class Program

{

    public static void Main()

    {

        Dog dog = new Dog();

    }

}

​

class Animal

{

    protected string name;

​

    public Animal()

    {

        Console.WriteLine("Animal's default constructor");

    }    

​

    public Animal(string name)

    {

        this.name = name;

        Console.WriteLine("Animal's constructor with 1 parameter");

        Console.WriteLine(this.name);

    }

}

​

class Dog : Animal

{

    public Dog() : base()

    {

        Console.WriteLine("Dog's default constructor");

    }  

​

    public Dog(string name) : base(name)

    {

        Console.WriteLine("Dog's constructor with 1 parameter");

        Console.WriteLine(this.name);

    }

}