Re: Prototype in RPG/ILE

[Pete Hall <pbhall@xxxxxxxxxx>]

At 11:53 02/09/2000 , Bruce Collins wrote:
>I am trying to learn to use Subprocedures instead of Subroutines in RPG/ILE.
>I am having a problem understanding What the purpose of the Prototype and
>its relationship to the procudure. Could someone shed some light on this
>please.

It's similar to the prototype used in C or Pascal. Since the prototype is 
the only part of the procedure that actually appears in the calling 
program, it is required so that the compiler can know how parameters will 
be passed. The prototype formally defines the calling conventions for the 
procedure. It's more than just a parameter list. It can define the return 
value and its type, as well as the type of each parameter, whether the 
parameter is optional or required, whether it can vary in length, if it is 
passed by value or by reference, and whether operational descriptors will 
be used.

Pete Hall
pbhall@execpc.com
http://www.execpc.com/~pbhall
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