using System;
public class ChengFaBiao
{
    public static void Main()
    {
        Console.WriteLine ("jiu jiu cheng fa biao");
        for(int x=1;x<=9;x++)
        {
            for(int y=1;y<=x;y++)
            {
                Console.Write ("{0}*{1}={2}\t",x,y,x*y);
            }
            Console.WriteLine ();
        }
    }
}

啊啊！

ding