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The terminology in the manuals can get quite confusing.  According to the
manual's terminology, everything in a module is a procedure.  They use the
term Procedure rather generically.  Procedures come in various flavors:

1.) Main Procedures - The code you've always worked with that we thought of
as "programs".  H, F, D, I, C, O specs.
2.) Subprocedures - The new code that you put after your main code or in a
separate module.  Bounded by the newer P-specs.
3.) Functions - Subprocedures that return a value.  Homemade BIF's.

All three CAN use a prototype, the second two MUST.  If you use a prototype
for the first type, Main Procedures, it replaces the PLIST.  The prototype
defines the interfaces between all three of the above (size, type, order of
parameters).  Both the caller and the callee must have a prototype so that
the compiler knows what to expect.

There's a lot more details and caveats, but this will get you started.


> > -----Original Message-----
> > From: Justin Houchin [mailto:jhouchin9@charter.net]
> > Sent: Wednesday, April 17, 2002 11:31 AM
> > To: RPG Midrange
> > Subject: Prototypes
> >
> >
> > This is a multi-part message in MIME format.
> > --
> > [ Picked text/plain from multipart/alternative ]
> > I also have one more question. I am new to procedures. Can
> > someone explain in lemans terms  a definition of a prototype,
> > procedure, sub procedure and how they relate. I am confused
> > on the terminology. I read the section in the back of the
> > RPGIV book but I just need to better definition.
>
>


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