乘法口诀

using System;

namespace lianxi8
{
	class Program
	{
		public static void Main(string[] args)
		{
			for (int i=1;i<10;i++){
				for(int j=1;j<10;j++){
					Console.Write(i+"*"+j+"="+(i*j)+" ");
				}
			}
			
			// TODO: Implement Functionality Here
			
			Console.Write("Press any key to continue . . . ");
			Console.ReadKey(true);
		}
	}
}
第一种

using System;

namespace lianxi7
{
	class Program
	{
		public static void Main(string[] args)
		{
			for(int i=1;i<=9;i++){
				int g=9;
				Console.Write(g+"*"+i+"="+(i*g));
				Console.Write("   ");
				int f=8;
				Console.Write(f+"*"+i+"="+(i*f));
				Console.Write("   ");
				int d=7;
				Console.Write(d+"*"+i+"="+(i*d));
				Console.Write("   ");
				int b=6;
				Console.Write(b+"*"+i+"="+(i*b));
				Console.Write("   ");
				int a=5;
				Console.Write(a+"*"+i+"="+(i*a));
				Console.Write("   ");
				int c=4;
				Console.Write(c+"*"+i+"="+(i*c));
				Console.Write("   ");
				int ch=3;
				Console.Write(ch+"*"+i+"="+(i*ch));
				Console.Write("    ");
				int che=2;
				Console.Write(che+"*"+i+"="+(i*che));
				Console.Write("    ");
				int chen=1;
				Console.WriteLine(chen+"*"+i+"="+(i*chen));
				
			}
			
				
			
			
			// TODO: Implement Functionality Here
			
			Console.Write("Press any key to continue . . . ");
			Console.ReadKey(true);
		}
	}
}
第二种