using System;

​

public class Program

{

    public static void Main()

    {

        Dog MyDog = new Dog("Ricky", 2, "ss");    

        // 1- we can not instantiate a class with it's base constructor

        //Dog MyDog2=new Dog();

        // 2- we can not instantiate a class with any other base's constructor, just the one without any arguments

        //Dog MyDog3 = new Dog("Ricky",2);

        // 3- so the second constructor of the base class is useless

        // 4- in this case base class has to have a constructor without any arguments

    }

}

​

public class Animal

{

    public virtual string Name { get; set; }

​

    public Animal()

    {

        Name = "Snoopy";

    }

​

    public Animal(string _name, int x)

    {

        Name = "Snoopy" + "_" + _name + "_" + Convert.ToString(x);

    }

}

​

public class Dog : Animal

{

    public override string Name { get; set; }

​

    public Dog(string DogName, int DogX, string DogStr)

    {

        Console.WriteLine("Name: {0}", Name + "_" + DogName + "_" + Convert.ToString(DogX) + "_" + DogStr);

    }

​

}