Western Governors University (WGU) ITSW 2113 D278 Scripting and Programming Foundations Practice Exam

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What are built-in functions in programming?

Functions created by the user for specific tasks

Predefined functions provided by the language for common tasks

Built-in functions in programming are predefined functions provided by the language itself to facilitate common tasks, such as performing mathematical calculations, manipulating strings, or working with data structures. These functions are readily available for use without the need for the programmer to define them from scratch. This characteristic saves time and effort, enabling developers to write more efficient and readable code by leveraging functionalities that have already been optimized and tested within the language.

For instance, languages like Python offer built-in functions such as `len()`, which returns the length of an object, or `print()`, which outputs data to the console. These functions illustrate how built-in functions act as foundational components of programming languages, equipping developers with powerful tools that are easy to use.

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Functions that require external libraries to operate

Functions that only run in specific environments

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