艾瑞克的回憶錄

using System;
namespace ConsoleApplication1
{
    /// <summary>
    /// Class1 的摘要說明。
    /// </summary>
    class Class1
    {
        /// <summary>
        /// 應用程式的主入口點。
        /// </summary>
        [STAThread]
        static void Main(string[] args)
        {
            do
            {
                int type;
                Console.WriteLine("請選擇所要列印的報表規格");
                Console.WriteLine("1.標準 2.A4尺寸 3.A3尺寸");
                type = int.Parse(Console.ReadLine());

                Console.WriteLine("*******************************************************");
                switch (type)
                {
                    case 1:
                        printreport pr = new printreport();
                        pr.printstart();
                        break;
                    case 2:
                        printA4 pa = new printA4();
                        pa.printstart();
                        break;
                    case 3:
                        printA3 pa3 = new printA3();
                        pa3.printstart();
                        break;
                }
            } while (true);
        }
    }
    class printreport
    {
        public printreport()
        {
            Console.WriteLine("繼承:報表程式啟動......");
        }
        public virtual void printstart()
        {
            Console.WriteLine("報表開始列印..");
            Console.WriteLine("列印標準尺寸報表...");
            Console.WriteLine("工作完成...");
            finishedwork("標準");
        }
        protected void finishedwork(string type)
        {
            Console.WriteLine("多載:{0}報表列印完成...", type);
            Console.WriteLine("多載:清楚佇列工作.....");
        }
    }
    class printA4 : printreport
    {
        public override void printstart()
        {
            Console.WriteLine("報表開始列印..");
            Console.WriteLine("列印A4尺寸報表...");
            Console.WriteLine("工作完成...");
            finishedwork("A4");
        }
    }
    class printA3 : printreport
    {
        public override void printstart()
        {
            Console.WriteLine("報表開始列印..");
            Console.WriteLine("列印A3尺寸報表...");
            Console.WriteLine("工作完成...");
            finishedwork("A3");
        }
    }

}