Simple-Inheritance

using System;

public class Mammal
{
    public int Age { get; set; }

    public Mammal(int age)
    {
        this.Age = age;
    }
   
    public void Sleep()
    {
        Console.WriteLine("Shhh! I'm sleeping!");
    }
}


using System;

public class Dog : Mammal
{
    public string Breed { get; set; }

    public Dog(int age, string breed) : base(age)
    {
        this.Breed = breed;
    }

    public void WagTail()
    {
        Console.WriteLine("Tail wagging...");
    }
}

using System;

class SimpleInheritance
{
    static void Main()
    {
        Dog joe = new Dog(8, "Labrador");
        joe.Sleep();
        joe.WagTail();
        Console.WriteLine("Joe is {0} years old dog of breed {1}.",
            joe.Age, joe.Breed);
        Console.ReadLine();
    }
}



OUTPUT

Shhh! I'm sleeping!
Tail wagging...
Joe is 8 years old dog of breed Labrador.