Re: RPGIII vs. RPG400

M
Hello Jon,

Specifically RPG III is the dialect for the System/38 and first two releases of 
the AS/400.  
RPG/400 is a superset of RPG III and arrived with VRM130 of OS/400. They can be 
thought of as 
the same language but RPG/400 has additional operation codes for dealing with 
strings (SUBST, 
CAT, CHECK, etc) and support for MOVE with pad, READ with no lock, etc.

Don't confuse RPG/400 with RPG IV which is a major improvement and dialectic 
difference.  RPG 
IV is often (incorrectly) called ILE RPG.  RPG IV has support for procedures, 
prototypes, local 
variables, pointers, built-in functions (%SUBST, %TRIM, %EDIT, etc), the EVAL 
operation code, 
free-format expressions, and other good stuff.  This is the RPG of the future.

Regards,
Simon Coulter.

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//--- forwarded letter -------------------------------------------------------
> X-Mailer: Microsoft Outlook 8.5, Build 4.71.2232.26
> Date: Fri, 30 Jul 99 11:21:51 -0700
> From: "Jon & Cindy Erickson" <eware@pcez.com>
> To: RPG400-L@midrange.com
> Reply-To: RPG400-L@midrange.com
> Subject: RPGIII vs. RPG400
> Importance: Normal

> 
> Rould anyone tell me differences between RPGIII & RPG400 besides feature
> codes?
> 
> Thanks,
> 
> Jon

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