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

Creating an order entry and editing application , Assume you are creating a...

Assume you are creating an order entry and editing application for a book store. An order consists of a product, quantity, total price, payment type including Credit/Debit card acc

Gdi objects, GDI OBJECTS   The CDC provides 5 versions for the GDI obj...

GDI OBJECTS   The CDC provides 5 versions for the GDI objects. They are fonts, brushes, pens, bitmaps and regions. The Select Object function substitutes the current GDI objec

Calculating annual percent yield, I am having a hard time with calculating ...

I am having a hard time with calculating APY in my project. Every time I run the program my second APY is blank.

Dynamic link library - database applications, DYNAMIC LINK LIBRARY   T...

DYNAMIC LINK LIBRARY   The dynamic link library (dll) permits one copy of a function to be shared among some parallel executing programs. The dll is a file that contains a num

Explain Databound Controls, Databound Controls - A controls use to display ...

Databound Controls - A controls use to display the contents of table using Data Control , have to bound each Control to the specific field and the controls are Known as the Data Bo

For next repetition - control statement, For ..... Next Repetition Statemen...

For ..... Next Repetition Statement: To demonstrate the working of for .. next control statement, put a command button and a label control on the form. The Handle clicks the e

Option explicit declaration - data types, Option Explicit Declaration: ...

Option Explicit Declaration: If the option explicit is used essentially then all the variables will have to be declared. Or else an error will be reported saying that the vari

Intrinsic controls, INTRINSIC CONTROLS   The Intrinsic controls are th...

INTRINSIC CONTROLS   The Intrinsic controls are the built-in controls. Few of the controls are Combo box, Check box, Command Button, Label etc. The controls have properties re

Infomation system, what are the things that information system can do and t...

what are the things that information system can do and their limitations?

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