InterviewQuestion_C#_程序题_001

 1 using System;
 2 
 3 namespace InterView
 4 {
 5     public class A
 6     {
 7         public virtual void Fun1(int i)
 8         {
 9             Console.WriteLine(i);
10         }
11         public void Fun2(A a)
12         {
13             a.Fun1(1);
14             Fun1(5);
15         }
16     }
17 }

 1 namespace InterView
 2 {
 3     public class B : A
 4     {
 5         public override void Fun1(int i)
 6         {
 7             base.Fun1(i + 1);
 8         }
 9     }
10 }

 1 using System;
 2 
 3 namespace InterView
 4 {
 5     class Program
 6     {
 7         static void Main(string[] args)
 8         {
 9             B b = new B();
10             A a = new A();
11             a.Fun2(b);
12             b.Fun2(a);
13 
14             Console.ReadKey();
15         }
16     }
17 }