using System;

public class Program

{

    public static void Main()

    {

        string choice;

        string[,] name=new string[5,3]

        {

            {"周子瑜","李玉璽","周杰倫"},

            {"李榮浩","郭采潔","林心如"},

            {"林志玲","金敏俊","郭雪芙"},

            {"林俊傑","郭碧婷","王大陸"},

            {"曾孟箴","黃歆茹","明沛安"}

        };

        do

        {

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

        Console.WriteLine("銘傳點名系統");

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

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

            int i,j,x,y;

            for(i=0;i<5;i++)

            {

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

                for(j=0;j<3;j++)

                {

                    Console.Write("  ");

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

                }

                Console.WriteLine();

            }

        Console.WriteLine();

        Console.WriteLine("請輸入...(點名請按a,按q離開):");

        choice=Console.ReadLine();

            if (choice=="a")

        {

            Console.WriteLine();

                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.WriteLine("缺席者坐第幾排？");

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

            Console.WriteLine("缺席者坐第幾個？");

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

            if((x>=1)&&(x<=5)&&(y>=1)&&(y<=3))

            {

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

                else

                {

                    Console.WriteLine();

                    Console.WriteLine("查無此人");

                    Console.WriteLine();

                }

            }

        Console.WriteLine();

        }while(choice!="q");

        Console.WriteLine("再見");

    }

}