RE: while exit from the dsply fiel its adding a blank record with 0'

You are absolutely right with that students question.  However, you are
missing that these guys have moved on to the technical discussion on when
and where a DOW and DOU conditions are executed on a loop.


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rpg400-l-bounces@xxxxxxxxxxxx wrote on 08/18/2006 09:03:21 AM:

I am sorry but it doesnt matter whether it is a DOW or DOU the logic
of the program MUST go from the screen and through the steps to the
end of the loop, so it will ALWAYS write a record to that file no
matter what you do.

Or am I missing something?

Steve

-----Oorspronkelijk bericht-----
Van: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]Namens Wayne McAlpine
Verzonden: vrijdag 18 augustus 2006 15:00
Aan: rpg400-l@xxxxxxxxxxxx
Onderwerp: Re: while exit from the dsply fiel its adding a blank record
with 0'


The DOU loop checks at the end, so it is always executed at least once.

Jeff Crosby wrote:

Shiva -

I'm NOT going to give you the technical answer, but anyone
who has had the
CS101 course (basic programming logic) has surely been taught
that a DO WHILE loop (RPG/400's DOW operation) doesn't check
the looping condition until it reaches the END of the loop
(RPG/400's ENDDO operation).

I think that's incorrect.  Doesn't the DOW check at the start of the

loop

and the DOU check at the end?

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