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
Performance Notes
Optimized for batch processing
Efficient file-based calculations
Leverage built-in DB2 integration for speed
Avoid unnecessary nested loops
Use modular subprocedures to improve maintainability
Security Notes
RPG programs follow IBM i security settings
Ensure proper file permissions
Control user access to sensitive data
Secure batch job submissions
Audit critical calculations
Monitoring Analytics
Monitor job execution on IBM i
Check report outputs for correctness
Validate calculations with sample data
Review DB2 query performance
Audit logs for critical business processes
Code Quality
Consistent variable and file naming
Clear modularization with subprocedures
Proper error handling
Readable calculation and report logic
Comment legacy and modern RPG code
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.