changing a for loop into a do while loop

[tronracer]

I changed this:

 

intTotal = 0
For intOuterCounter = 2 To 5 Step 2
 For intInnerCounter = 2 To 4 
   intTotal += intInnerCounter
 Next intInnerCounter
Next intOuterCounter

 

into this:

 

intTotal = 0
intInnerCounter = 2
intOuterCounter = 2
Do While (intOuterCounter >= 2 And intOuterCounter <= 5)
   intOuterCounter += 2
   Do While (intInnerCounter >= 2 And intInnerCounter <= 4)
       intInnerCounter += 1
       intTotal += intInnerCounter
   Loop
Loop

 

 

In the first loop I get 18, then in the second I get 12. The goal is to get the same result. I need to keep it a nested loop. What's wrong?[edit]Added VB tags[/edit]

Edited March 12, 2003 by John

[bpayne111]

you do realize the Next statment increments the value by the step THEN checks to see if it is still valid.. if it is out of the defined bounds then the loop terminates thought the value stays the same

 

what makes you think these 2 will be the same? what number are you trying to return?

[Nerseus]

You need to change the loop to add the counters at the bottom since a For loop changes the value at the bottom (when it hits the Next statement).

 

Also, you'll want to reset your intInnerCounter on every pass through the outer loop since the For statement does that as well.

 

Here's a revised version that works, hopefully - I can't test it from here but I hope I did it right :)

 

intTotal = 0
intOuterCounter = 2
Do While (intOuterCounter >= 2 And intOuterCounter <= 5)
   intInnerCounter = 2
   Do While (intInnerCounter >= 2 And intInnerCounter <= 4)
       intTotal += intInnerCounter
       intInnerCounter += 1
   Loop
   intOuterCounter += 2
Loop

 

-Nerseus

[tronracer]

it is for my vb class

 

the question was to change the for loop into a series of do while loops. The first code was given...the second I wrote. So the first part of the code should execute twice since the statement would be true for the vaulue of 2 and 4. The nested part should execute 3 times, once for 2, 3, and 4. 2+3+4 = 9 so the result I should get is 18. Thank you I just tried the code and it works....I'll have to analyze what I did wrong later and what you said.....Thank you very much