Re: Preventing a divide by zero error

[Clay B Carley <cbc@xxxxxxxxx>]

Thanks for the replies.

I'll take another look to see what I can do about checking for the zero 
divisor.  The book has not yet covered IF statements; I'll be looking 
more throughly later to see if I missed anything.

Thanks again,
Clay Carley
Sonic.net/ Sonic Telecom

dpcmarion@xxxxxxxxxxxxxxxxx wrote:
>    I would check for a zero divisor prior to doing the arithmetic.  I try to
>    stay away from the monitor statement as this will leave a message in the
>    job log that there was an error even though it was trapped.   This trapped
>    error confuses the other programmers I work with when they trouble shoot
>    jobs.  i have been told multiple times that my programs had an error
>    because I chose to monitor for it instead on preventing it.
>
>
>
>    I think monitor is a great tool, but it apparently confuses others that
>    read through job logs.
>
>
>
>    I think it is more efficient to monitor for an infrequent error rather
>    than executing multiple lines of validity code every time when looping.
>
>
>
>    Rich
>
>    ------ Original Message ------
>
>      From : Michael Ryan<michaelrtr@xxxxxxxxx>
>      To : RPG programming on the IBM i (AS/400 and iSeries);
>      Sent : 6/21/2013 07:14
>      Subject : Re: Preventing a divide by zero error
>
>
>  No, that's what you would do. You could also place a Monitor group around
>  the statement. You would then execute the statement and 'catch' the error.
>  I would check the divisor for zero myself.
>
>
>  On Thu, Jun 20, 2013 at 11:24 PM, Clay Carley <cbc@xxxxxxxxx> wrote:
>
>  > This sounds like an easy an easy thing to check for, but here's what is
>  > going on:
>  >
>  > I'm studying (on my own) RPG IV using Stanley Myers' book, "RPG IV
>  > Programming on the AS/400".  I'm doing the programming assignments at
>  > the end of Chapter 5, and assignment 5-2 wants "Include the control that
>  > prevents a divide-by-zero error".  As far as I can tell, this hasn't
>  > been discussed in the book yet; so I don't want to jump ahead with a
>  > solution that isn't what they are really looking for.
>  >
>  > This is what the line in question could be something like:
>  >
>  > C               EVAL       GRPFT = NETPRICE / GROSSPRFT
>  >
>  > Is there some EVAL option I'm missing for this?  Setting indicators is
>  > discussed, but for the life of me I don't see anything related to divide
>  > by zero.
>  >
>  > I did some searching, but I found what I would logically do to check for
>  > a zero in the variable before doing the math.  That hasn't been covered
>  > in this book yet, so I'm guessing there is something else to it.
>  >
>  > Thanks,
>  > Clay Carley
>  > Sonic.net/ Sonic Telecom
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