Re: Starting out with sub-procedures -- RPG400-L

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Bob cozzi wrote:

... Procedure - There are actually two versions of procedures: Procedures and Functions. I believe the only difference is that function will return a value to the caller during an implied call, whereas a procedure does not return a value and hence must be called with a CALLP (in RPG IV speak). A procedure has local variables (typically) and can access its own local variables as well as any globally declared variables. SubProcedure - The official RPG IV term for Procedures and Functions. ...

According to the RPG Reference manual, there are basically two types of procedures:

1) The "main procedure" is what you normally think of as a program. That is, it's that procedure that runs the RPG logic cycle.

2) A "subprocedure" is a procedure that's not a main procedure. (A NOMAIN module only contains subprocedures.)

Otherwise, in practice, the terms "procedure" and "subprocedure" are pretty much synonymous. "Procedure" is just the more general term.

Cheers! Hans

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