1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 6 namespace ConsoleApplication1 7 { 8 class 闰平年 9 { 10 static void Main(string[] agre) 11 { 12 Console.Write("请输入一个年份:"); 13 string a = Console.ReadLine(); 14 int year = Convert.ToInt32(a); 15 16 if (year % 400 == 0) 17 { 18 Console.WriteLine(year + "年是闰年"); 19 } 20 else if (year % 4 == 0 && year % 100 != 0) 21 { 22 Console.WriteLine(year + "年是闰年"); 23 24 } 25 else 26 { 27 Console.WriteLine(year + "年是平年"); 28 } 29 } 30 } 31 }