Exempel - Polymorfi Virtual

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Polymorfi {
    class Program {
        static void Main(string[] args) {
            List<Animal> animals = new List<Animal>();
            animals.Add(new Dog());
            animals.Add(new Cat());
            animals.Add(new Animal());
            for(int i = 0; i < animals.Count; i++) {
               Console.WriteLine(animals[i].Sound());
            }
            Console.ReadKey(true);
        }
    }
    public class Animal {
        public Animal() { }
        public virtual string Sound() {
            return ("Argh");
        }
    }
    public class Cat : Animal {
        public override string Sound() {
            return ("Mjau");
        }
    }
    public class Dog : Animal {
        public override string Sound() {
            return ("Vov");
        }
    }

}