C#《大话设计模式》之模板方法模式学习笔记

 static void Main(string[] args)
        {
            Console.WriteLine("学生甲抄的试卷：");
            TestPaper A = new TestPaperA();
            A.TestQuestion1();
            A.TestQuestion2();
            A.TestQuestion3();

            Console.WriteLine("学生乙抄的试卷：");
            TestPaper B = new TestPaperB();
            B.TestQuestion1();
            B.TestQuestion2();
            B.TestQuestion3();

            Console.ReadKey();

        }
    }
    abstract class TestPaper  //此处原书是普通类，此处改为抽象类，从而而不用实现虚方法
    {
        public void TestQuestion1()
        {
            Console.WriteLine("1+1，A.2 B.3 C.4. D.1");
            Console.WriteLine("答案：" + Answer1());
        }
        protected abstract string Answer1();
        public void TestQuestion2()
        {
            Console.WriteLine("月有阴晴圆__ A.方 B.窄 C.缺 D.美");
            Console.WriteLine("答案：" + Answer2());
        }
        protected abstract string Answer2();

        public virtual void TestQuestion3()
        {
            Console.WriteLine("《机动车安全运行技术条件》的简称是 A.GB18565 B.GB7258 C.GB800 D.GB400");
            Console.WriteLine("答案：" + Answer3());
        }
        protected abstract string Answer3();

    }
    class TestPaperA : TestPaper
    {
        protected override string Answer1()
        {
            return "A";
        }
        protected override string Answer2()
        {
            return "B";
        }
        protected override string Answer3()
        {
            return "C";
        }
    }
    class TestPaperB : TestPaper
    {
        protected override string Answer1()
        {
            return "C";
        }
        protected override string Answer2()
        {
            return "B";
        }
        protected override string Answer3()
        {
            return "A";
        }
    }