C# Leapyear
using System; public static class Leap { public static bool IsLeapYear(int year) { if(year % 4 == 0 && year % 100 == 0 && year % 400 == 0) return true; else if (year % 4 == 0 && year % 100 == 0) return false; else if (year % 4 == 0) return true; else return false; } }