杨辉三角

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication6
{
    class Program
    {
        static void Main(string[] args)
        {
            int[,] b= new int[12,12];

            for (int i = 0; i <12 ; i++)
            {
                 int j = i;
            for (int k = 1; k <= j; k++)
            {
                if (k == 1)
                {
                   b[j, k] = 1;
                }
                else if (k == j)
                {
                    b[j, k] = 1;
                }
                else
                {
                    b[j, k] = b[j - 1, k - 1] + b[j - 1, k];
                }
                Console.Write(b[j, k] + " ");
                }
               Console.WriteLine();
                } 
               Console.ReadLine(); 

        }
    }
}