Csharp/CSharp Tutorial/Design Patterns/MVC Pattern

MVC Patterns

using System;
using System.Collections.Generic;
using System.Text;
    interface IController
    {
       void DisplayPrice();
    }
    public class Model
    {
        public double Price()
        {
            return 100;
        }
    }
    public class FirstController: IController
    {
      private Model mod;
      public void DisplayPrice()
      {
        double cost = mod.Price() * 1.15;
        String message = "first USD " + cost.ToString();
        Console.WriteLine(message);
      }
      public FirstController()
      {
        mod = new Model();
      }
    }    
    public class SecondController: IController
    {
      private Model mod;
 
      public void DisplayPrice()
      {
            double cost = mod.Price()*1.1;
            String message = "second USD " + cost.ToString();
            Console.WriteLine(message);
      }
      public SecondController()
      {
        mod = new Model();
      }
    }
    public class Client
    {
        static void Main(string[] args)
        {
          SecondController viewUS = new SecondController();
          viewUS.DisplayPrice();
          FirstController viewNorway = new FirstController();
          viewNorway.DisplayPrice();
        }
    }