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Hmm... that looks like something Perl would be more apt at doing. Perl is great at parsing. I can see that would be a big program in RPG if you are looking for all possible cases. You have to look for the parenthesis, you have to look at the signs, most mathematical formulas use sign hierarchy (* and / before + and -) most are left to right, but some are right to left, etc... That is, 12 * 10 + 3 / 2 can produce a number of answers, depending on how you parse it. 61.5 = ((12 * 10) + 3) / 2 = Left to right 121.5 = (12 * 10) + (3 / 2) = Hierarchy 138 = 12 * (10 + (3 / 2)) = Right to left (APL uses this) and then you get into combinations of hierarchy and left to right or right to left. Most interpreters doe them with hierarchy and Left to Right (such as Visual Basic). I'm not sure what the Eval statement does, I would assume the same way. It doesn't look like a quick program. Regards, Jim Langston Eric Panissard wrote: > Hi everybody, > > I am looking for an RPG sub-program who can recognize and calculate a text > equation like : > (250*(12+45.5))-10 > > the equation can contain : the 4 basic operation, decimal point, multiple > parenthesis <SNIP> +--- | This is the Midrange System Mailing List! | To submit a new message, send your mail to MIDRANGE-L@midrange.com. | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com. | To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: david@midrange.com +---
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