Re: To ride The Cycle or not to ride (was Re: INZSR weirdness)

"James H H Lampert" <jamesl@xxxxxxxxxxx> wrote:

> Which is to say, I've written lots of programs that use
> The Cycle as an event loop, and a few that use it to ride
> around an entire file, and a few that use it to ride
> around some chunk of a file ...

A trivial program that uses the cycle but does not have a primary file:

d count           s              3i 0
 /free
     count = count + 1;
     if count = 5;
         *inlr = *on;
     endif;
 /end-free

Now, does "count" get incremented once or several times?
Does it finally overflow?
Does the program loop forever?
If it terminates, is LR on or off?

Any programmer familiar with the cycle should get the correct answers
immediately. For those not familiar with the cycle the questions might be a
bit tougher. If you're not sure try stepping through it in debug and
watching what happens. I feel that RPG programmers should have at least a
basic understanding of the cycle even if they never use it. After all it is
still a feature of the language.

--
Dave...


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