判断完全平方数

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
[backcolor=silver]//判断一个正整数是否为完全平方数？[/backcolor]
namespace 平时练习
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("请输入一个数：");
            string numberString = Console.ReadLine();
            int number = Convert.ToInt32(numberString);
            bool reault=Judge(number);
            if (reault == true)
                Console.WriteLine("{0} is 完全平均数", number);
            else
                Console.WriteLine("{0} is not 完全平均数",number);
        }

        private static bool Judge(int number)
        {
            bool result = false;
double x = Math.Sqrt(number);
            for (int i = 0; i <= x; i++)
            {
                if (i * i == number)
                {
                    result = true; break;
                }
            }
            return result;
        }
    }
}