找出闰年

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            List <int> leap1=new List <int>();
            List<int> leap2 = new List<int>();
            for(int year = 1900;year <= 9999;year++)
            {
                if(year % 4 == 0 && year % 100 != 0)
                {
                    leap1.Add(year);
                }
                else if(year % 100==0 && year %400==0)
                {
                    leap2.Add(year);
                }
            }
            Console.WriteLine("被4整除的闰年");
            foreach(int temp in leap1)
            {
                Console.WriteLine(temp);
            }
            Console.WriteLine("被400整除的闰年");
            foreach(int temp in leap2)
            {
                Console.WriteLine(temp);
            }
            Console.Read();
        }
    }
}