class Program
 {
  static void Main(string[] args)
  {
   for (int i = 1; i < 10; i++)
   {
    if (i % 3 == 1)
    {
     StorageDevice storge1 = new Upan("sandisk--" + i.ToString());
     storge1.Inputdevice();
     storge1.WriteDataToDevice();
    }
    else if (i % 3 == 2)
    {
     StorageDevice storge2 = new YingPan("westdata--" + i.ToString());
     storge2.Inputdevice();
     storge2.WriteDataToDevice();
    }
    else if (i % 3 == 0)
    {
     StorageDevice storge3 = new MobliePhone("iphone--" + i.ToString());
     storge3.Inputdevice();
     storge3.WriteDataToDevice();
    }
   }
   Console.ReadKey();
  }
 }

 abstract class StorageDevice
 {
  public abstract void Inputdevice();
  public abstract void WriteDataToDevice();
 }

 class Upan : StorageDevice
 {
  public Upan(string name)
  {
   this.Name = name;
  }

  private string Name;
  public override void Inputdevice()
  {
   Console.WriteLine("U pan ({0}) input the computer.....", Name);
  }

  public override void WriteDataToDevice()
  {
   Console.WriteLine("U pan ({0}) write data.....", Name);
  }
 }

 class MobliePhone : StorageDevice
 {
  private string Name;
  public MobliePhone(string name)
  {
   this.Name = name;
  }
  public override void Inputdevice()
  {
   Console.WriteLine("Mobile Phone ({0}) input the computer....", Name);
  }
  public override void WriteDataToDevice()
  {
   Console.WriteLine("Mobile Phone ({0}) write data....", Name);
  }
 }

 class YingPan : StorageDevice
 {
  public YingPan(string name)
  {
   this.Name = name;
  }
  public string Name { get; private set; }

  public override void Inputdevice()
  {
   Console.WriteLine("Ying pan ({0}) input the computer...", Name);
  }
  public override void WriteDataToDevice()
  {
   Console.WriteLine("Ying pan ({0}) write data...", Name);
  }
 }