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iSeries
WebSphere
Development
Studio
ILE
RPG
Reference
Version
5
SC09-2508-05
ERserver
iSeries
WebSphere
Development
Studio
ILE
RPG
Reference
Version
5
SC09-2508-05
ERserver
Note!
Before
using
this
information
and
the
product
it
supports,
be
sure
to
read
the
general
information
under
Notices
on
page
795.
Sixth
Edition
(May
2004)
This
edition
applies
to
Version
5,
Release
3,
Modification
Level
0,
of
IBM
WebSphere
Development
Studio
for
iSeries
(5722-WDS),
ILE
RPG
compiler,
and
to
all
subsequent
releases
and
modifications
until
otherwise
indicated
in
new
editions.
This
edition
applies
only
to
reduced
instruction
set
computer
(RISC)
systems.
This
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replaces
SC09-2508-04.
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|||
#
####
#
Contents
About
This
Reference
.
.
.
.
.
.
.
. xi
Who
Should
Use
This
Reference
.
.
.
.
.
.
. xi
Prerequisite
and
Related
Information
.
.
.
.
.
. xii
How
to
Send
Your
Comments
.
.
.
.
.
.
.
. xii
What's
New
.
.
.
.
.
.
.
.
.
.
.
.
.
. xii
Changes
to
this
Guide
Since
V5R1
.
.
.
.
.
. xiii
What's
New
This
Release?
.
.
.
.
.
.
.
.
. xiii
What's
New
in
V5R2?
.
.
.
.
.
.
.
.
.
. xvii
What's
New
in
V5R1?
.
.
.
.
.
.
.
.
.
.
. xx
What's
New
in
V4R4?
.
.
.
.
.
.
.
.
.
. xxv
What's
New
in
V4R2?
.
.
.
.
.
.
.
.
.
. xxix
What's
New
in
V3R7?
.
.
.
.
.
.
.
.
.
. xxxiii
What's
New
in
V3R6/V3R2?
.
.
.
.
.
.
. xxxvii
Part
1.
RPG
IV
Concepts
.
.
.
.
.
. 1
Chapter
1.
Symbolic
Names
and
Reserved
Words
.
.
.
.
.
.
.
.
.
.
. 3
Symbolic
Names
.
.
.
.
.
.
.
.
.
.
.
.
. 3
Array
Names
.
.
.
.
.
.
.
.
.
.
.
.
. 4
Conditional
Compile
Names
.
.
.
.
.
.
.
. 4
Data
Structure
Names
.
.
.
.
.
.
.
.
.
. 4
EXCEPT
Names
.
.
.
.
.
.
.
.
.
.
.
. 4
Field
Names
.
.
.
.
.
.
.
.
.
.
.
.
. 4
KLIST
Names
.
.
.
.
.
.
.
.
.
.
.
.
. 4
Labels
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 4
Named
Constants
.
.
.
.
.
.
.
.
.
.
.
. 4
PLIST
Names
.
.
.
.
.
.
.
.
.
.
.
.
. 5
Prototype
Names
.
.
.
.
.
.
.
.
.
.
.
. 5
Record
Names
.
.
.
.
.
.
.
.
.
.
.
.
. 5
Subroutine
Names
.
.
.
.
.
.
.
.
.
.
. 5
Table
Names
.
.
.
.
.
.
.
.
.
.
.
.
. 5
RPG
IV
Words
with
Special
Functions/Reserved
Words
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 5
User
Date
Special
Words
.
.
.
.
.
.
.
.
.
. 7
Rules
for
User
Date
.
.
.
.
.
.
.
.
.
.
. 7
PAGE,
PAGE1-PAGE7
.
.
.
.
.
.
.
.
.
.
. 8
Rules
for
PAGE,
PAGE1-PAGE7
.
.
.
.
.
.
. 8
Chapter
2.
Compiler
Directives
.
.
.
. 11
/FREE...
/END-FREE
(Positions
7-11)
.
.
.
.
.
. 11
/TITLE
(Positions
7-12)
.
.
.
.
.
.
.
.
.
. 11
/EJECT
(Positions
7-12)
.
.
.
.
.
.
.
.
.
. 11
/SPACE
(Positions
7-12)
.
.
.
.
.
.
.
.
.
. 12
/COPY
or
/INCLUDE
.
.
.
.
.
.
.
.
.
.
. 12
Results
of
the
/COPY
or
/INCLUDE
during
Compile
.
.
.
.
.
.
.
.
.
.
.
.
.
. 14
Nested
/COPY
or
/INCLUDE
.
.
.
.
.
.
. 14
Using
/COPY,
/INCLUDE
in
Source
Files
with
Embedded
SQL
.
.
.
.
.
.
.
.
.
.
.
. 14
Conditional
Compilation
Directives
.
.
.
.
.
. 15
Defining
Conditions
.
.
.
.
.
.
.
.
.
. 15
Predefined
Conditions
.
.
.
.
.
.
.
.
.
. 16
Condition
Expressions
.
.
.
.
.
.
.
.
.
. 17
Testing
Conditions
.
.
.
.
.
.
.
.
.
.
. 17
The
/EOF
Directive
.
.
.
.
.
.
.
.
.
. 19
Handling
of
Directives
by
the
RPG
Preprocessor
20
Chapter
3.
Program
Cycle
.
.
.
.
.
. 21
General
RPG
IV
Program
Cycle
.
.
.
.
.
.
.
. 21
Detailed
RPG
IV
Program
Cycle
.
.
.
.
.
.
. 22
Detailed
RPG
IV
Object
Program
Cycle
.
.
.
. 24
Initialization
Subroutine
.
.
.
.
.
.
.
.
. 2