Free-Format RPG IV

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Upgrading your RPG skills is essential, and programmers are increasingly adopting the free-format style of RPG IV for its enhanced productivity, readability, and maintenance ease. This guide serves as a comprehensive resource for mastering this powerful coding approach. While IBM manuals provide free-format information, they often require extensive research to extract relevant details. This book eliminates that hassle, offering a one-stop solution to streamline your learning process. Author Jim Martin covers not only the rules and syntax of free-format RPG IV but also illustrates how this coding style can significantly boost programmer productivity from development to maintenance. The book methodically explains the "how to" aspects of free-format RPG IV, addressing style issues like named indicators and built-in functions. Key topics include input and output, program flow, data manipulation, and math operations, with a dedicated chapter on prototyping and APIs. This definitive guide equips you with essential tips for writing maintainable code and provides complete-program solutions for common challenges, including display and printer files. By upgrading your RPG skills to free-format, you can elevate your programming career to new heights.