Repeating statements while a condition is true, Visual Basic Programming

Assignment Help:

Use the While keyword to verify a condition in a Do...Loop statement. You can verify the condition before you enter the loop (as illustrated in the following ChkFirstWhile instance), or you can verify it after the loop has run at least once (as illustrated in the ChkLastWhile instance). In the ChkFirstWhile procedure, if myNum is set to 9 rather than 20, the statements inside the loop will never run. In the ChkLastWhile process, the statements inside the loop run only once since the condition is already False.

Sub ChkFirstWhile() Dim counter, myNum counter = 0

myNum = 20

Do While myNum > 10 myNum = myNum - 1 counter = counter + 1

Loop

MsgBox "The loop made " & counter & " repetitions." End Sub

Sub ChkLastWhile() Dim counter, myNum counter = 0

myNum = 9

Do

myNum = myNum - 1 counter = counter + 1

Loop While myNum > 10

MsgBox "The loop made " & counter & " repetitions." End Sub

The above figure illustrate two example code fragments illustrating the do... loop and do while ... loop statements. In the first loop the condition is verified before executing the code however in the second loop the statements are first executed once and after that the condition is verified. In the first loop the instructions given in the loop's body will never be executed if the condition initially fails but in the second loop these instructions would be executed at least once.  The following flow chart illustrates the execution plan of the second procedure i.e. CheckLastWhile:

1225_Repeating Statements While a Condition is True.png

                Figure: Execution Plan of the Second Loop


Related Discussions:- Repeating statements while a condition is true

Create a procedure - vbscript, Each piece of data is passed in your process...

Each piece of data is passed in your process using an argument. Arguments serve like placeholders for the data you wish to pass into your process. You can name your arguments along

Menus and tool bars in visual basic, MENUS AND TOOL BARS   The Menu op...

MENUS AND TOOL BARS   The Menu options can be checked, enabled, disabled, and popped up on an object. The Menu Object: The Menu control is used to generate a menu in

Document interfaces - visual basic programming, DOCUMENT INTERFACES   ...

DOCUMENT INTERFACES   A SDI (Single document interface) and the MDI (Multiple document interfaces) are the document interfaces. The MDI based applications can have numerous ch

Windows 32 bit (win 32) applications, WINDOWS 32 BIT (WIN 32) APPLICATIONS ...

WINDOWS 32 BIT (WIN 32) APPLICATIONS   The Win 32 based applications are the applications developed for the windows family of the operating systems. The Win 32 applications ac

Deleting handlers with class wizard, Deleting Handlers With Class Wizard: ...

Deleting Handlers With Class Wizard: The handler can be deleted by using the class wizard. The class wizard will delete the prototype and message map entry. The user should ma

What is vbscript, This is a member of Microsoft's Visual Basic family of de...

This is a member of Microsoft's Visual Basic family of development products. Other members comprise Visual Basic (Professional and Standard Editions) & Visual Basic for Application

Using procedure and exception handling, I was looking solution for assignme...

I was looking solution for assignment named Alamo Tour

Message loop, MESSAGE LOOP   The message loop is the code in the Win 3...

MESSAGE LOOP   The message loop is the code in the Win 32 based application. It retrieves messages from the application's message queue and passes these to the related window

Appwizard, APPWIZARD   The Appwizard is a tool used for creating a p...

APPWIZARD   The Appwizard is a tool used for creating a project. It follows a series of steps to create a project. Steps Involved in Creating A Project: Step 1: Fr

Use serialize function in document class to implement file, USE OF SERIALIZ...

USE OF SERIALIZE FUNCTION IN DOCUMENT CLASS TO IMPLEMENT FILE void CStoreDoc::Serialize(CArchive& ar) { if (ar.IsStoring()) { // TODO: add storing code here }

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd