using System;
namespace Test
{
   class Program
   {
      static void Main(string[] args)
      {
         int guess,number=17;
         do
         {
            Console.WriteLine("你猜测的数:");
            guess=Console.Read();
            if(guess > number)
               Console.WriteLine("太大!");
            if(guess < number)
               Console.WriteLine("太小!");     
         }while(guess!=number);
         Console.WriteLine("恭喜你,你猜中了!");
         Console.ReadLine();
      }
   }
}
语法没有错误，只是得不到应得的结果！为什么？

using System;
namespace Test
{
   class Program
   {
      static void Main(string[] args)
      {
         int guess,number=17;
         do
         {
            Console.WriteLine("你猜的数:");
            //guess=int.Parse(Console.ReadLine());
            guess=Convert.ToInt32(Console.ReadLine());
            if(guess>number)
               Console.WriteLine("太大!");
            if(guess<number)
               Console.WriteLine("太小!");
         }while(guess!=number);
         Console.WriteLine("恭喜你，猜对了!");
      }
   }
}
因为Console类的Read（）方法的问题，导致用Read（）方法读入一个数时会引入一些错误的数字！
所以出错，我改为readline方法后就好了，谢谢各位！