using System;//10 的阶乘
class Factorial
{
    int nCounter=1 , nProduct=1;
    public void Multiplication()
    {
        while(nCounter<=10)
        {
          nCounter++;
          nProduct=nProduct*nCounter;
        }
        Console.WriteLine(nProduct);
     }
     public static void Main(string[]args)
     {
        Factorial Max = new Factorial();
        Max.Multiplication();
     }
}     

*************************************************
//using System;
//using System.Collections.Generic;
//using System.Text;

//namespace ConsoleApplication1
//{
//    class P
//    {
//        int a = 1, b = 1, c = 0;
//        void q()
//        {
//            while(a<d)
//            {
//            c = c + b;
//            a++;
//            b = b * a;
//            }
//            Console.WriteLine(c);
//        }

//        static void Main(string[] args)
//        {
//            P PP = new P();
//            PP.q();
//        }
//    }
//}
using System;
class p
{
    public int f(int a)
    {
        int x;
        if (a == 1)
            return 1;
        else
        x=f(a - 1) * a;
      return x;
        
    }
    static void Main(string [] args)
    {
        p P = new p();
      
      
       Console.WriteLine(P.f(10));

    }
}    我不要答案 ， 告诉我错误就行啦！
     发错误的朋友 ， 莪在这说声谢谢额！

[ 本帖最后由 qq1004974443 于 2010-10-18 14:00 编辑 ]

第一个没有错误，第二个是输入的错误：
1、calss Factorial 应该是 class Factorial
2、public static void Main(srting[]arge)应该是public static void Main(string[]arge)

thank you