Re: Data Structure with same physical file format and fields two times

Quoting a lower case character as prefix is invalid because RPG is
case insensitive. The name resulting from quoting a lowercase prefix
is not usable from RPG!

Without the quotes, RPG will uppercase the name. With the quotes, it
is preventing from doing so. This behavior is necessary since some
ILE languages (such as C) are case sensitive.

When I want to prototype the C quicksort procedure - qsort() I _have_
to use extproc like so:
d QuickSort pr extproc('qsort')

These won't work:
d QuickSort pr extproc(qsort)
d QuickSort pr extproc('QSORT')
d QuickSort pr extproc(QSORT)


HTH,
Charles



On Fri, Oct 2, 2009 at 12:17 PM, Jim Essinger <dilbernator@xxxxxxxxx> wrote:

Andy and Michael,

Yes - it worked to remove the single quotes, but why didn't mine?  The RPG
reference says that I can use either, and if it has a period, it _must_ be a
character literal.  It also worked to put single quotes around capital
letter prefix.  Single quotes around lowercase letters must be invalid.

From the manual;

PREFIX(prefix{:nbr_of_char_replaced})

The PREFIX keyword is used to partially rename the fields in an externally
described file.The characters specified in the first parameter are prefixed
to the names of all fields defined in all records of the file specified in
positions 7-16. The characters can be specified as a name, for example
PREFIX(F1_),  _or as a character literal, for example PREFIX(’F1_’)_. A
character literal must be used if the prefix contains a period, for example
PREFIX(’F1DS.’) or PREFIX(’F1DS.A’)......

On Fri, Oct 2, 2009 at 9:55 AM, Andy Hautamaki
<ahautamaki@xxxxxxxxxxxxxxx>wrote:

Take out the single quotes?
----- Original Message -----
From: "Jim Essinger" <dilbernator@xxxxxxxxx>
To: "RPG programming on the IBM i / System i" <rpg400-l@xxxxxxxxxxxx>
Sent: Friday, October 02, 2009 11:33 AM
Subject: Data Structure with same physical file format and fields two times

All,

I know it must be something simple that I am missing.  I want the
structure
of a physical file in my program twice, renaming the fields so I can
compare
a before and after picture.

My code;

     *  Old record data structure
    D oorddtl       E DS                  EXTNAME(myfile) prefix('or':2)
    D
     *  New record data structure
    D norddtl       E DS                  EXTNAME(myfile) prefix('nr':2)
    D

The compile error I am getting is;

*RNF3534 20 a      003500  The parameter for keyword PREFIX is not valid;
keyword is ignored.

As I am still new(er) to ILE RPG (reformed COBOL programmer and previous
RPG
III programmer), my reading of the manual says this should be possible.
So
what am I missing?

Thanks!

JIm
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