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Chapter 15: Problem 4

What is an event-driven program?

Short Answer

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#tag_title# Short Answer #tag_content# Event-driven programming is a software design paradigm where a program's structure and behavior are determined by specific events, triggered by either internal or external actions (e.g., user input). The program flow is determined by the order of event occurrences, not by a predetermined sequence. Event-driven programming is often used for interactive applications like GUIs, where user interactions (clicking a button, for example) trigger events that are processed by callback functions, resulting in specific actions.

Step by step solution

01

Introduction to Event-Driven Programs

Event-driven programming is a software design paradigm in which the structure and behavior of a program are determined by the occurrence of specific events. These events can be triggered internally within the system or externally by user input or certain system occurrences.
02

Characteristics of Event-Driven Programs

Some common characteristics of event-driven programs include: 1. They use callback functions to respond to events. 2. The flow of the program is determined by the order in which events occur, not by a predetermined sequence. 3. They are often used for creating interactive applications, such as graphical user interfaces.
03

Example of Event-Driven Programs

A typical example of an event-driven program is a Graphical User Interface (GUI) application. In a GUI application, user interactions with the interface trigger events, which are then processed and result in an action being taken by the software. For example, when a user clicks a button, an event is generated, and a function is called to handle the event, performing a specific action (such as saving a file or displaying a message).

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Most popular questions from this chapter

What is a user interface?

When the user runs a program in a text-based environment, such as the command line, what determines the order in which things happen?

Why was GUI programming complex and time consuming in the early days of GUI technology?

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How does a command line interface work?
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