using System;

public class Program

{

    public static void Main()

    {

        int choice=0;

        string[,]name=new string[6,4]

        {

            {"周子瑜","李玉璽","周杰倫","蘇志燮"},

            {"李榮浩","郭采潔","林心如","河正宇"},

            {"林志玲","金敏俊","郭雪芙","劉在錫"},

            {"林俊傑","郭碧婷","王大陸","孔劉"},

            {"謝沂庭","林佳瑩","李曉瑄","李棟旭"},

            {"鋼鐵人","蜘蛛人","雷神索爾","浩克"}

        };

        do{

            Console.WriteLine("############");

            Console.WriteLine("銘傳電影院座位表");

            Console.WriteLine("************");

            Console.WriteLine("      第一個 第二個 第三個 第四個");

            int i,j,x,y;

            for(i=0;i<6;i++)

            {

                Console.Write("第"+(i+1)+"排");

                for(j=0;j<4;j++)

                {

                    Console.Write(" ");

                    Console.Write(name[i,j]);

                }

                Console.WriteLine();

            }

            Console.WriteLine();

            Console.WriteLine("請輸入(到位請按0，按1賓客已入座，按9離開):");

            choice=Convert.ToInt16(Console.ReadLine());

            if(choice==0)

            {

                string password;

                Console.Write("請輸入管理密碼:");

                password=Console.ReadLine();

                if(!(password=="xx123"))

                {

                Console.WriteLine();

                Console.WriteLine("密碼錯誤");

                break;

                }

                Console.Write("第幾排未入座?");

                x=Convert.ToInt16(Console.ReadLine());

                Console.Write("第幾個未入座?");

                y=Convert.ToInt16(Console.ReadLine());

                if((x>=1)&&(x<=6)&&(y>=1)&&(y<=4))

                {name[x-1,y-1]="*未到*";}

                else 

                {

                    Console.WriteLine();

                    Console.WriteLine("查無此人");

                    Console.WriteLine();

                }

            }

          else if(choice==1){

            Console.WriteLine();

            Console.Write("賓客全到，電影開始放映");

                }

        }while(choice!=9);

        Console.WriteLine();

        Console.Write("再見!");

        }

    }

​