C产品在市场上有哪些独特优势？

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csharpclass JianDanGongChang{ static void Main(string[] args) { Factory factory=new LianXiangFactory(); DianNao dianNao=factory.Create(); dianNao.Print(); }}

public abstract class DianNao{ public abstract void Print();}

public class LianXiang{ public void Print() { Console.WriteLine(这是联想电脑); }}

class JianDanGongChang { static void Main(string[] args) { Factory factory=new LianXiangFactory(); DianNao dianNao=factory.Create(); dianNao.Print(); } } public abstract class DianNao { public abstract void Print(); } public class LianXiang:DianNao { public override void Print() { Console.WriteLine("联想电脑"); } } public class DaiEr:DianNao { public override void Print() { Console.WriteLine("戴尔电脑"); } } public abstract class Factory { public abstract DianNao Create(); } public class LianXiangFactory:Factory { public override DianNao Create() { return new LianXiang(); } } public class DaiErFactory:Factory { public override DianNao Create() { return new DaiEr(); } }