In programming, what is a function?

• A. A series of statements that can be called by name
• B. A data type
• C. A loop control
• D. A hardware component

Answer: (A)

A function is a named block of code designed to perform a specific task and can be executed by calling its name, often with input values and sometimes returning a result. This makes programs more modular and reusable because you can define a task once and reuse it wherever needed, rather than repeating code. For example, a function might take two numbers and return their sum; you call it with arguments, and you get back the result. It’s not a data type, which would describe kinds of data like numbers or strings, it’s not a loop control, which governs repetition, and it’s not hardware.