摘要:
using System;using System.Collections.Generic;using System.Text;using System.Collections;namespace ConsoleApplication3{ abstract class AbstractCompnent { abstract public void operation(); } class Leaf:AbstractCompnent { string str; public Leaf(string str) {... 阅读全文
摘要:
using System;using System.Collections.Generic;using System.Text;using System.Collections;namespace ConsoleApplication3{ abstract class Compnent { abstract public void Operation(); } class ConcreateCompnent : Compnent { public override void Operation() { ... 阅读全文