一个简单继承的例子，面试失败的教训

 public class A     {         public virtual void Print1()         {             string s = "Print A";         }               public void Print3()         {             string s = "Print No virtual";         }     }     public class B : A     {         public override void Print1()         {             string s = "Print B";         }         public new void Print3()         {             string s = "Print No Virtual B";         }     }     public class C : B     {         public override void Print1()         {             string s = "Print C";         }         public new  void Print3()         {         }     }

 

void Main()

{

       A a= new C();

 

     a.Print1();// print C

 

    a.Print3();// Print A

}