B2.5 File processing

This section develops students’ ability to construct programs that perform file-processing operations, an essential skill for handling external data. Students will learn how to manipulate text files by opening them in various modes—such as read, write, and append—and how to correctly read from, write to, and close files after operations are completed. Depending on the programming language, students will use appropriate tools such as `open()`, `read()`, and `write()` in Python, or classes like `Scanner`, `FileWriter`, and `BufferedReader` in Java, to build practical and efficient file-handling solutions.