Advanced Placement (AP) Computer Science 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What does the term 'data type' refer to in programming?

A way to declare a variable

A classification of data indicating its intended use

The term 'data type' in programming refers to a classification of data that indicates its intended use. This classification helps the programming language understand how to process the data, what kind of operations can be performed on it, and how much memory it should allocate for it. Different data types define the format of the data as well as the potential operations: for example, integers, floats, strings, and booleans each serve distinct purposes and have specific properties.

Understanding data types is fundamental because it impacts how you write functions, perform calculations, or even store data. For instance, trying to perform arithmetic operations on a string data type would not yield meaningful results and can lead to errors. Hence, knowing and using the correct data type is essential for effective programming.

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A method to execute functions

An error checking procedure

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