using System;

public class Program

{

    public static void Main()

    {

        int choice=0;

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

        //name[0,0]="周子瑜";name[0,1]="李玉璽";

        //name[1,0]="李榮浩";name[1,1]="郭采潔";

        //name[2,0]="林志玲";name[2,1]="金敏俊";

        {

            {"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"},

            {"蔡依林","柯震東","黃鴻升"}

        };

        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.Write("請輸入(點名請按0，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.WriteLine("開始點名");

        Console.Write("缺席者坐第幾排");

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

        Console.Write("缺席者坐第幾個");

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

        //name[x-1,y-1]="*缺席*"; 

        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();    

        }   

        }   

        }while(choice!=9);

        Console.WriteLine();

        Console.Write("再見!");

    }

}