What is event-driven programming?

Event-driven programming is a programming paradigm in which the flow of the program is determined by events – sensor outputs, user actions (mouse clicks, key presses), or messages from other programs or threads. Event-driven applications typically have a main loop that listens for events and then triggers specific callback functions or routines to handle them. This approach is commonly used in graphical user interfaces (GUIs), operating systems, and real-time systems where responsiveness to external stimuli is crucial. It promotes loose coupling and allows different parts of the system to react independently to events, enhancing modularity and flexibility.