Learn Rpg - 10 Code Examples & CST Typing Practice Test
RPG (Report Program Generator) is a high-level programming language primarily used for business applications, especially on IBM midrange systems like AS/400 and IBM i, for generating reports and handling data processing tasks.
Learn RPG with Real Code Examples
Updated Nov 20, 2025
Learning Path
Start with fixed-format RPG IV
Learn file handling and record operations
Practice calculations and report formatting
Explore subprocedures and modular design
Integrate DB2 database operations
Skill Improvement Plan
Week 1: Basic RPG syntax and reports
Week 2: File I/O and calculations
Week 3: Subprocedures and modular coding
Week 4: DB2 integration and batch jobs
Interview Questions
What is RPG used for?
Difference between fixed and free-format RPG?
Explain RPG file I/O operations
How are subprocedures used in RPG?
How does RPG integrate with DB2?
Cheat Sheet
F-spec: file definitions
D-spec: data/variable definitions
C-spec: calculations
P-spec: procedures
RPG IV free-format: calculation statements in source lines
Books
RPG IV Programming on IBM i
Mastering RPG IV
RPG IV for Experienced Programmers
RPG IV by Example
Practical RPG IV Programming
Tutorials
Getting Started with RPG IV
File I/O in RPG
Subprocedures and Modular Design
Report Generation Examples
Legacy RPG Maintenance Techniques
Official Docs
IBM Knowledge Center: RPG Reference
IBM i RPG IV Programming Guide
IBM RPG manuals and technical notes
Community Links
IBM i developer forums
Reddit r/IBMi
LinkedIn RPG groups
Midrange Systems community
GitHub repositories for RPG examples
Community Support
IBM i developer forums
Midrange systems user groups
Reddit r/IBMi
LinkedIn RPG developer groups
IBM Knowledge Center resources
Frequently Asked Questions about Rpg
What is Rpg?
RPG (Report Program Generator) is a high-level programming language primarily used for business applications, especially on IBM midrange systems like AS/400 and IBM i, for generating reports and handling data processing tasks.
What are the primary use cases for Rpg?
Generating business reports. Batch data processing. Financial calculations. Inventory and logistics management. Legacy enterprise application maintenance
What are the strengths of Rpg?
Highly optimized for business data processing. Legacy systems are stable and reliable. Deep integration with IBM i/AS400. Efficient for batch report generation. Strong backward compatibility
What are the limitations of Rpg?
Steep learning curve for modern programmers. Legacy syntax can be cumbersome (fixed format). Limited use outside IBM i ecosystem. Modern web and GUI support is limited. Difficult to integrate with non-IBM systems
How can I practice Rpg typing speed?
CodeSpeedTest offers 10+ real Rpg code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.