Sample Source for Debug Examples

*Pointers

D NullPtr

S

*

INZ(*NULL)

D BasePtr

S

*

INZ(%ADDR(String))

D ProcPtr

S

*

ProcPtr INZ(%PADDR('c_proc'))

D BaseString

S

6A

BASED(BasePtr)

D BaseOnNull

S

10A

BASED(NullPtr)

*

 

 

 

D Spcptr

S

*

 

D SpcSiz

C

 

8

*Date, Time, Timestamp

D BigDate

S

D

INZ(D'9999-12-31')

D

BigTime

S

T

INZ(T'12.00.00')

D

BigTstamp

S

Z

INZ(Z'9999-12-31-12.00.00.000000')

*Array

D Arry

S

3S 2 DIM(2) INZ(1.23)

*Table

D TableA

S

3

DIM(3) CTDATA

 

*-----------------------------------------------------------------

 

 

*

 

* Define different types of data structures.

 

 

*-----------------------------------------------------------------

 

 

*

D DS1

DS

 

OCCURS(3)

 

D

Fld1

 

5A

INZ('ABCDE')

D

Fld1a

 

1A

DIM(5) OVERLAY(Fld1)

D

Fld2

 

5B

2 INZ(123.45)

 

*

 

 

 

 

D DS2

DS

10

OCCURS(2)

 

 

*

 

 

 

 

D DS3

DS

 

 

 

D

Title

 

5A

INZ('Mr.

')

D

LastName

 

10A

INZ('Jones

')

D

FirstName

 

10A

INZ('Fred

')

 

*-----------------------------------------------------------------

 

 

*

 

* Define prototypes for called procedures c_proc and switc￿h

 

*-----------------------------------------------------------------

 

 

*

D c_proc

PR

*

EXTPROC('c_proc')

D

size

 

10U

0 VALUE

 

D

inzval

 

1A

CONST

 

D Switch

PR

 

 

 

D

Parm

 

1A

 

 

 

*-----------------------------------------------------------------

 

 

*

*Define parameters for non-prototyped call

*PARM1 is used when calling RPGPROG program.

*-----------------------------------------------------------------

 

*

D PARM1

S

4P

3 INZ(6.666)

D EXPORTFLD

S

6A

INZ('export') EXPORT

 

 

 

Figure 105 (Part

2

of 4). Source for Module DBGEX

Chapter 11. Debugging Programs213

Page 237
Image 237
IBM AS/400 manual DIM3 Ctdata, DS1, Inzabcde, DS2, DS3, PARM1, Exportfld

AS/400 specifications

The IBM AS/400, now known as the IBM iSeries, is a midrange computer system that has been a cornerstone of enterprise computing since its introduction in 1988. Designed to provide a robust platform for business applications, the AS/400 is celebrated for its reliability, scalability, and integrated database capabilities.

One of the key features of the AS/400 is its Integrated Operating Environment, which blends hardware and software resources seamlessly. This integration allows businesses to execute diverse workloads, ranging from traditional applications to modern web-based services, all on a single platform. The operating system, OS/400 (now IBM i), offers a rich set of APIs and tools for developers, simplifying application development and management.

Another standout characteristic of the AS/400 is its built-in database, DB2 for i. This powerful relational database management system allows for efficient data handling and provides advanced features such as support for SQL, XML, and JSON, making it easier for businesses to manage their data and integrate it with other systems. The database's tight integration with the operating system enables high performance and security.

In terms of scalability, the AS/400 can accommodate small businesses as well as large enterprises, with the ability to support hundreds of users simultaneously. Its architecture allows for easy upgrades in hardware, meaning that organizations can scale their systems without replacing the entire infrastructure.

Security is another critical attribute of the AS/400. With a sophisticated security model, it offers built-in user authentication, access control, encryption, and auditing capabilities to protect data and applications from unauthorized access.

The AS/400 also supports multiple programming languages, including RPG, COBOL, Java, and PHP, giving organizations the flexibility to choose the development tools that best fit their needs. This diversity helps maintain legacy applications while also developing new ones that leverage modern technologies.

Moreover, the platform supports both traditional green-screen interfaces and modern graphical user interfaces, allowing organizations to transition smoothly into contemporary user experience paradigms.

Overall, the IBM AS/400 stands out as a resilient, flexible, and secure computing platform that enables organizations to effectively manage their business operations, streamline processes, and adapt to changing market demands. Its unique combination of integrated features and capabilities ensures that it remains relevant in today's fast-paced technology landscape.