Q. C# Program to Check Whether the Given Year is Leap Year or Not.

Here you will find an algorithm and program in C# programming language to check whether the given year is leap year or not. First let us understand what is leap year?

Explanation : A leap year is a calendar year that contains an additional day added to keep the calendar year synchronized. A leap year is exactly divisible by 4, except for the century years (the years ending with 00). Century year is a leap year only if it is completely divisible by 400.

For Example : 2012 is Leap Year, 2014 is not a leap year.

START
Step 1 → Initialize variable year
Step 3 → Check if year is divisible by 4 but not by 100, DISPLAY "leap year"
Step 4 → Check if year is divisible by 400, DISPLAY "leap year"
Step 5 → Otherwise, DISPLAY "not leap year"
STOP

C# Program to Check Leap Year

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Program
{
	class leapyear
	{
		static void Main(string[] args)
		{
			leapyear obj = new leapyear();
			obj.readdata();
			obj.leap();
		}
		int check_year;
		public void readdata()
		{
			check_year = 1998;
		}
		public void leap()
		{
			if ((check_year % 4 == 0 && check_year % 100 != 0) || (check_year % 400 == 0))
			{
				Console.WriteLine("{0} is a Leap Year", check_year);
			}
			else
			{
				Console.WriteLine("{0} is not a Leap Year", check_year);
			}
			Console.ReadLine();
		}
	}
}

Output

1998 is not a leap year.