[BLACKBOX] Reading of OUT parameters

From: [at]} <Rainer>
Date: Wed, 8 Apr 2009 18:33:33 +0200

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Hi all,
I need urgent help for a silly problem:
is it possible to read the values of OUT parameters within the body
of a procedure; i.e. to use OUT parameters as local variables ?

The language report tells:
"Other output parameters must be considered as undefined prior to the
first assignment in the procedure"

So I suppose, after the first assignment I could use an OUT parameter
as local variable, that is, reading and writing works.

But the first example in the language report, (10.1 Formal
Parameters), procedure ReadInt, uses an explicit
local variable i to get its job done. At the end of the procedure
body the value of i is assigned to the OUT parameter x.

Is this just a style of programming or is this obligatory ?


Thanks a lot for any (instant) help.

Best regards,
Rainer

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Received on Wed Apr 08 2009 - 18:33:33 UTC