using System;

/*

Create an abstract class called Animal with an abstract method called MakeSound(), which returns a string representing the sound. 

Create two derived classes called Dog and Cat that inherit from Animal. 

Implement the MakeSound() method in each derived class to return "Woof!" for the Dog class and "Meow!" for the Cat class. 

Finally, create an array of Animal objects containing instances of Dog and Cat. 

Iterate over the array and call the MakeSound() method for each object.

*/

public static class Program

{

    public static void Main()

    {

    }

}