62 lines
1.4 KiB
C#
62 lines
1.4 KiB
C#
namespace _5_6
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{
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public interface ICDPlayer
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{
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void Play();
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void Stop();
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void PreviousTrack();
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void NextTrack();
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int CurrentTrack
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{
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get;
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}
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}
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public class CDPlayer : ICDPlayer
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{
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private int currentTrack = 0;
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public void Play()
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{
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Console.WriteLine("启动CD。。。");
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}
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public void Stop()
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{
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Console.WriteLine("停止播放CD。。。");
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}
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public void PreviousTrack()
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{
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if (currentTrack > 0)
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{
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currentTrack--;
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}
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Console.WriteLine("上一音轨：");
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}
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public void NextTrack()
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{
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Console.WriteLine("下一音轨：");
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currentTrack++;
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}
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public int CurrentTrack
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{
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get
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{
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return currentTrack;
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}
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}
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}
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public class Program
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{
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static void Main(string[] args)
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{
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CDPlayer mycd = new CDPlayer();
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mycd.Play();
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Console.WriteLine("当前音轨：" + mycd.CurrentTrack);
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mycd.NextTrack();
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Console.WriteLine("当前音轨：" + mycd.CurrentTrack);
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mycd.PreviousTrack();
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Console.WriteLine("当前音轨：" + mycd.CurrentTrack);
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mycd.Stop();
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}
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}
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}
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