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

namespace ConsolePolymorphism2
{
    class Employee // 定義Employee員工類別
    {
        //_salary宣告為Protected保護層級,此欄位可以在子類別中使用
        protected int _salary;
        public virtual int Salary
        {
            get
            {
                return _salary;
            }
            set
            {

                //薪資低於2萬元，以2萬元計；高於4萬元以4萬元計
                if (value < 20000)
                    _salary = 20000;
                else if (value > 40000)
                    _salary = 40000;
                else
                    _salary = value;
            }
        }
        public virtual void ShowTotal() //ShowTotal方法允許被覆寫
        {
            Console.WriteLine("\n 底薪：{0}元", Salary);
        }
    }
    // 定義Manager經理子類別繼承自Employee員工父類別
    class Manager : Employee
    {

        public int Bonus { get; set; }
        public override int Salary
        {
            get
            {
                return _salary; //使用父類別的_salary
            }
            set
            {
                //薪資低於3萬元，以3萬元計；高於6萬元以6萬元計
                if (value < 30000)
                    _salary = 30000;
                else if (value > 60000)
                    _salary = 60000;
                else
                    _salary = value;

            }
        }
        public override void ShowTotal()//覆寫Employee的ShowTotal方法
        {
            base.ShowTotal();	//呼叫父類別Employee的ShowTotal方法
            Console.WriteLine("\n 薪水+獎金共：{0}元", (Bonus + Salary).ToString("0,0"));
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Employee tom = new Employee();
            tom.Salary = 40000;
            Console.WriteLine("\n Tom 員工薪資 : {0}元", tom.Salary.
                              ToString("0,0"));
            tom.ShowTotal();
            Console.WriteLine("===================");
            Console.WriteLine();
            Manager peter = new Manager();
            peter.Salary = 70000;
            Console.WriteLine("\n Peter 經理薪資 : {0}元", peter.Salary.
                                ToString("0,0"));
            peter.Bonus = 30000;
            Console.WriteLine(" Peter 經理獎金 : {0}元", peter.Bonus.
                                   ToString("0,0"));
            peter.ShowTotal();
            Console.Read();
        }
    }
}