C# -Data driven

using System;

namespace CSharp
{
    class Animal
    {

        public string name;
        public string sound;



        public Animal(){
            String name;
            String sound;

        }
        public Animal(String _name, String _sound){
            name=_name;
            sound=_sound;
        }
        public void Print(){
            Console.WriteLine("Old MacDonald had a farm, E I O E I O,");
            Console.WriteLine("And on his farm he had a " + name +", E I O E I O");
            Console.WriteLine("With a "  + sound + " " + sound +" here and a " + sound + " " + sound + " there,");
            Console.WriteLine("Here a " + sound + "," + " there a " + sound + ", ev'rywhere a " + sound + " " + sound);
            Console.WriteLine("Old MacDonald had a farm, E I E I O");


                   }

    }
    class MainClass{
        public static void Main(string [] args){

                Animal cow =new Animal("cow","moo");
                Animal dog= new Animal("dog", "aw");
                Animal duck=new Animal("duck", "quack");
                Animal sheep=new Animal("sheep","mee");
                Animal cat=new Animal("cat", "mwao");

                cow.Print();
                Console.WriteLine();
                dog.Print();
                Console.WriteLine();
                duck.Print();
                Console.WriteLine();
                sheep.Print();
                Console.WriteLine();
                cat.Print();
                Console.WriteLine();


            Console.ReadKey();
        }
    }
}