illustrates interfaces

   

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/
/*
  Example8_1.cs illustrates interfaces
*/

using System;


// define the IDrivable interface
public interface IDrivable
{

  // method declarations
  void Start();
  void Stop();

  // property declaration
  bool Started
  {
    get;
  }

}


// Car class implements the IDrivable interface
class Car : IDrivable
{

  // declare the underlying field used by the Started property
  private bool started = false;

  // implement the Start() method
  public void Start()
  {
    Console.WriteLine("car started");
    started = true;
  }

  // implement the Stop() method
  public void Stop()
  {
    Console.WriteLine("car stopped");
    started = false;
  }

  // implement the Started property
  public bool Started
  {
    get
    {
      return started;
    }
  }
  
}


public class Example8_1
{

  public static void Main()
  {

    // create a Car object
    Car myCar = new Car();

    // call myCar.Start()
    myCar.Start();
    Console.WriteLine("myCar.Started = " + myCar.Started);

    // call myCar.Stop()
    myCar.Stop();
    Console.WriteLine("myCar.Started = " + myCar.Started);

  }

}