The fifth edition this gold-standard book covers the most significant update to RPG IV in many years Since its original publication, Programming in RPG IV has given thousands of students and professionals a strong foundation in the essentials of business programming using RPG IV. Sporting a new organization reflecting the best methods, as currently recognized, for teaching and learning the language, the book has been updated throughout for the latest software version. The new edition features a completely revamped chapter structure to enable the RPG programming language to be taught more effectively in both classroom and individualized learning settings. The content has also undergone a comprehensive update to provide fresh code examples and bring the book in line with the latest version of the language. All-new programming exercises and assignments add even more value for learning. The book includes complete coverage of the program development process, RPG IV specifications and operations, creating and using files, program workflow and structured design, arithmetic operations and functions, accessing and updating database files, writing interactive applications, modular programming, service programs, error handling, subfiles, APIs, and more. This book is the one guide you need to learn how to be successful with all aspects of RPG IV.