What is a leap year and how to write a visual basic program to check leap year? before write the code let’s understand the leap year.

What is a leap year?

A year that has 366 days is called a leap year. It means an extra day in the year which will be 29 Feb and it comes in every 4 years.

As a programming logic, we can say A year which is divide by 4, 1oo and 400 is called a leap year.

Visual basic program to check leap year or not

In the below code will solve the leap year problem using visual basic. It will take a year as user input and check the year is divisible 4, 100 and 400. If it is divisible then it will print “This is a leap year” or If it is not then it will pint “This is not a leap year”.

Module Module1
     Sub Main()
        Console.WriteLine("Enter a year...")
        Dim x, y, z, year
        'Read a year..........
        year = Console.ReadLine()
        x = year Mod 4
        y = year Mod 100
        z = year Mod 400
        If ((x = 0 And Not (y = 0)) Or z = 0) Then
            Console.WriteLine("This is a leap year")
        Else
            Console.WriteLine("This is not a leap year")
 
        End If
        Console.ReadLine()
    End Sub
 
End Module

Output:

Check leap year in visual basic using forms

This is the example 2 that is using Visual basic form or you can say a visual basic application. that going to implement the same logic but this time using forms.

It will take a year as input check the condition and print output message as a result.

Public Class Form1
     Dim x, y, z, year
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Sum.Click
        year = TextBox1.Text
        x = year Mod 4
        y = year Mod 100
        z = year Mod 400
        If ((x = 0 And Not (y = 0)) Or z = 0) Then
            Label2.Text = "This is a leap year"
        Else
            Label2.Text = "This is not a leap year"
        End If
    End Sub
 
End Class

Output