Question

Using a user inputted number through a texbox that runs a code that lists the prime factor decomposition in VB.net

Answer 1

Dear Student ,

As per requirement submitted above kindly find below solution.

Here new windows forms application in VB.net is created using visual studio 2019 with name "VB_PrimeFactors". This application contains a form with name "Form1.vb".Below is the details of this form.

Form1.vb[Design] :

Form1.vb:

Public Class Form1 'VB class
'button to find prime factors
Private Sub btnPrimeFactors_Click(sender As Object, e As EventArgs) Handles btnPrimeFactors.Click
'taking number entered by user
Dim number As Integer = Integer.Parse(txtNumber.Text)

'using for loop
For index = 2 To number
'this for loop will goes from 2 to number
'checking whether number is divisible by index
If number Mod index = 0 Then
'if number Mod 2 is zero this means remainder is 0 then
Dim k As Integer = 2
'declaring variable to store prime number status
Dim primeStatus As Boolean = False
'using while loop
While k < index / 2
'checking if index mod k is zero , remainder is zero
If index Mod k = 0 Then
primeStatus = True 'set prime status
Exit While 'this line is used to exit while loop
End If
k = k + 1 'increment value of k
End While
'checking value of variable primeStatus
If primeStatus = False Then
'if number is prime then
lblHeader.Text += index & " "
End If
End If
Next
End Sub
End Class

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Output :Run application using F5 and will get the screen as shown below

Screen 1:

NOTE :PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.