/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy
Publisher: Sybex;
ISBN: 0782129110
*/
/*
Example8_6.cs illustrates deriving an
interface from multiple interfaces
*/
using System;
public class Example8_6
{
public static void Main()
{
// create a Car object
Car myCar = new Car();
// call myCar.Start()
Console.WriteLine("Calling myCar.Start()");
myCar.Start();
// call myCar.TurnLeft()
Console.WriteLine("Calling myCar.TurnLeft()");
myCar.TurnLeft();
// call myCar.Accelerate()
Console.WriteLine("Calling myCar.Accelerate()");
myCar.Accelerate();
}
}
// define the IDrivable interface
public interface IDrivable
{
// method declarations
void Start();
void Stop();
// property declaration
bool Started
{
get;
}
}
// define the ISteerable interface
public interface ISteerable
{
// method declarations
void TurnLeft();
void TurnRight();
}
// define the IMovable interface (derived from IDrivable and ISteerable)
public interface IMovable : IDrivable, ISteerable
{
// method declarations
void Accelerate();
void Brake();
}
// Car class implements the IMovable interface
public class Car : IMovable
{
// declare the underlying field used by the
// Started property of the IDrivable interface
private bool started = false;
// implement the Start() method of the IDrivable interface
public void Start()
{
Console.WriteLine("car started");
started = true;
}
// implement the Stop() methodof the IDrivable interface
public void Stop()
{
Console.WriteLine("car stopped");
started = false;
}
// implement the Started property of the IDrivable interface
public bool Started
{
get
{
return started;
}
}
// implement the TurnLeft() method of the ISteerable interface
public void TurnLeft()
{
Console.WriteLine("car turning left");
}
// implement the TurnRight() method of the ISteerable interface
public void TurnRight()
{
Console.WriteLine("car turning right");
}
// implement the Accelerate() method of the IMovable interface
public void Accelerate()
{
Console.WriteLine("car accelerating");
}
// implement the Brake() method of the IMovable interface
public void Brake()
{
Console.WriteLine("car braking");
}
}
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