File I/O
File I/O (Input/Output) is a fundamental programming concept that involves reading data from and writing data to files on a storage system. It enables programs to persist data beyond runtime, interact with external files, and handle data streams for various applications. This includes operations like opening, reading, writing, and closing files, often managed through APIs in programming languages.
Developers should learn File I/O to build applications that require data persistence, such as saving user settings, logging events, or processing large datasets from files. It is essential for tasks like configuration management, data import/export, and file-based communication in systems like web servers or desktop software. Mastery of File I/O ensures efficient handling of file operations, error management, and resource cleanup to prevent issues like memory leaks.