/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy
Publisher: Sybex;
ISBN: 0782129110
*/
/*
Example8_5.cs illustrates deriving an
interface from one interface
*/
using System;
// define the IDrivable interface
interface IDrivable
{
// method declarations
void Start();
void Stop();
// property declaration
bool Started
{
get;
}
}
// define the IMovable interface (derived from IDrivable)
interface IMovable : IDrivable
{
// method declarations
void Accelerate();
void Brake();
}
// Car class implements the IMovable interface
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 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");
}
}
public class Example8_5
{
public static void Main()
{
// create a Car object
Car myCar = new Car();
// call myCar.Start()
Console.WriteLine("Calling myCar.Start()");
myCar.Start();
// call myCar.Accelerate()
Console.WriteLine("Calling myCar.Accelerate()");
myCar.Accelerate();
}
}