using System;

public class Program

{

    public static void Main()

    {

    string choice;

    string[,] name= new string[4,3]

    {

    {"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"}

    };

    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<4; i++)

    {

    Console.Write("第"+(i+1)+"排");

    }

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

    {

​

    Console.Write("第"+(j+1)+"排");

    }

    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();

    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());

    if ((x>=1)&&(x<=4)&&(y>=1)&&(y<=3))

    { name[x-1, y-1]="*缺席*";}

    else

    {

    Console.WriteLine();

    }while(choice!="查無此人");

    Console.WriteLine();

    }

    Console.WriteLine();

    }while(choice!="q");

    Console.WriteLine("再見");

​

    }

}