static void Main(string[] args)
{
//实例化对象
MobileDisk md = new MobileDisk();
UDisk ud = new UDisk();
MP3 mp3 = new MP3();
Computer cp = new Computer();
//调用电脑中的父类的属性，并把子类赋值给父类
cp.usb = md;
//调用方法，看似调用父类的方法，但实际调用的方法已被父类中装的子类进行了改写。
cp.CpuRead();
cp.CpuWrite();
Console.ReadKey();
}
static void Main(string[] args)
{
//通过传参拿到父类
Computer cpu = new Computer();
MobileStorageDevice disk = new MobileDisk();
MobileStorageDevice mp3 = new MP3();
MobileStorageDevice up = new UP();
cpu.CpuRead(disk);
cpu.CpuWrite(disk);
cpu.CpuRead(mp3);
cpu.CpuWrite(mp3);
cpu.CpuRead(up);
cpu.CpuWrite(up);
Console.ReadKey();
}
static void Main(string[] args)
{
//通过属性拿到父类
Computer cpu = new Computer();
MobileStorageDevice disk = new MobileDisk();
MobileStorageDevice mp3 = new MP3();
MobileStorageDevice up = new UP();
cpu.Ms = disk;
cpu.CpuRead();
cpu.CpuWrite();
cpu.Ms = mp3;
cpu.CpuRead();
cpu.CpuWrite();
cpu.Ms = up;
cpu.CpuRead();
cpu.CpuWrite();
Console.ReadKey();
}
