Chapter 8. 面向对象（继承）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 继承
{
    public class Person
    {
        //字段
        private string _name;
        private int _age;
        private char _gender;

        //属性
        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }

        public int Age
        {
            get { return _age; }
            set { _age = value; }
        }

        public char Gender
        {
            get { return _gender; }
            set { _gender = value; }
        }


        //方法
        public void Say()
        {
            Console.WriteLine
                ("我是"+this.Name+"，我"+this.Age+"岁了"+"，我是"+this.Gender+"性，我会吃喝拉撒睡");
        }

    }

    public class Student : Person  //Student继承Person
    {
        private int _id;

        public int Id
        {
            get { return _id; }
            set { _id = value; }
        }

        public void Study()
        {
            Console.WriteLine("我会学习");
        }

    }

    public class Teacher : Student  //Teacher继承Student
    {
        private decimal _salaray;

        public decimal Salaray
        {
            get { return _salaray; }
            set { _salaray = value; }
        }

        public void Teach()
        {
            Console.WriteLine("我会教课");
        }

    }

    public class Professor : Teacher  //Professor继承Teacher
    {
        private int _teachTime;

        public int TeachTime
        {
            get { return _teachTime; }
            set { _teachTime = value; }
        }

        public void Profess()
        {
            Console.WriteLine("我是教授");
        }

    }

}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 继承
{
    class Program
    {
        static void Main(string[] args)
        {
            //Person类
            Person pp = new Person();
            pp.Name = "人";
            pp.Age = 0;
            pp.Gender='无';
            pp.Say();
　　　　　　　
　　　　　　　

            //Student类继承了Person类的所有属性和方法
            Student s = new Student();
            s.Name = "张三";
            s.Age = 18;
            s.Gender = '男';
            s.Id = 1001;
            s.Say();
            s.Study();
           
　　　　　　　

            //Teacher类继承了Person和Student类的所有属性和方法
            Teacher t = new Teacher();
            t.Name = "李四";
            t.Age = 25;
            t.Gender = '女';
            t.Id = 2001;
            t.Say();
            t.Study();
            t.Salaray = 5000.00M;
            t.Teach();
　　　　　　　
　　　　　　　

            //Driver类继承了Person和Student和Teacher类的所有属性和方法
            Professor p = new Professor();
            p.Name = "王五";
            p.Age = 35;
            p.Gender = '男';
            p.Id = 3001;
            p.Say();
            p.Study();
            p.Salaray = 10000.00M;
            p.Teach();
            p.TeachTime = 3;
            p.Profess();
　　　　　　　　
　　　　　　　

            Console.ReadLine();
        }       
    }
}