using System;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            long wan, qian, shi, ge;

            Console.WriteLine("请输入一个5位的数");
            int number = Convert.ToInt32(Console.ReadLine());

            wan = number / 10000;
            qian = number % 10000 /1000;
            shi = number % 100 / 10;
            ge = number % 10;

            if (ge == wan && shi == qian)/*个位等于万位并且十位等于千位*/
            {
                Console.WriteLine("This number is huiwen");
            }
            else
            {
                Console.WriteLine("This number is not huiwen");
            }
        }
    }
}

请输入一个5位的数
12321
This number is huiwen
请按任意键继续. . .

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