abstract class Animal

{

    public abstract Animal();

}

​

class Animal

{

    protected void eat()

    {

        Console.WriteLine("I can eat");

    }

}

​

// derived class of Animal 

class Dog : Animal

{

    static void Main(string[] args)

    {

        Dog labrador = new Dog();

        // access protected method from base class

        labrador.eat();

        Console.ReadLine();

    }

} } }

​