1. //program to inherit a class Dog from class Animal

   using System;
public class Animal
{
    public void eat() { Console.WriteLine("Eating..."); }
}
public class Dog : Animal
{
    public void bark() { Console.WriteLine("Barking..."); }
}
class TestInheritance2
{
    public static void Main(string[] args)
    {
        Dog d1 = new Dog();
        d1.eat();
        d1.bark();
        Console.ReadLine();
    }
}

2. //program to inherit a class Car from class Vehicle

using System;
class Vehicle  // base class (parent) 
{
    public string brand = "Ford";  // Vehicle field
    public void honk()             // Vehicle method 
    {
        Console.WriteLine("Tuut, tuut!");
    }
}

class Car : Vehicle  // derived class (child)
{
    public string modelName = "Mustang";  // Car field
}

class Program
{
    static void Main(string[] args)
    {
        // Create a myCar object
        Car myCar = new Car();

        // Call the honk() method (From the Vehicle class) on the myCar object
        myCar.honk();

        // Display the value of the brand field (from the Vehicle class) and the value of the modelName from the Car class
        Console.WriteLine(myCar.brand + " " + myCar.modelName);
        Console.ReadLine();
    }
}