偶數 素數

using System;
using System.Collections.Generic;
using System.Text;namespace 素數
{
    class Program
    {
        static void Main(string[] args)
        {
            for (; ; )
            {
                Console.WriteLine("請隨意輸入一個大於7的數字：");
                string s = Console.ReadLine();
                int Num = int.Parse(s);                Console.WriteLine("判斷是不是素數，結果為："+Second_True(Num));                Console.WriteLine("判斷是不是偶數，結果為："+OUSHU(Num));
            } 
           
        }              public static bool Second_True(int m)
        {
            bool yes = false;            int j = 2;            for (; j <= Math.Sqrt(m); j++)
            {
                if (m % j == 0)
                {
                    return yes;
                }            }            return yes = true;
        }        public static bool OUSHU(int m)
        {
            bool yes = false;
          
                for (int i = 0; i <= m; i++)
                {
                    if (i % 2 == 0 && i > 6)
                    {
                        //Console.WriteLine(i);
                        yes = true;                    }
                   
                }
                return yes;
 
        }
    }
}