Which term is a reusable unit of code designed to perform a specific task?

Which term is a reusable unit of code designed to perform a specific task?

• A. Data
• B. Operating System (OS)
• C. Function
• D. Module

Answer: (C)

A function is a reusable block of code designed to perform a specific task. You define it once with a name and a set of inputs, and you can call it from different places in your program to perform that task again, often returning a result. This encapsulation makes code easier to read and reuse, since the same function can be invoked with different inputs to produce different outputs while keeping the implementation consistent. A function is focused on one task, which is different from a module that is a larger unit that may contain multiple functions and other resources. Data refers to values a program uses, not executable code, and an operating system is the overall software that manages hardware and provides services, not a single reusable block of code for a particular task.

A function is a reusable block of code designed to perform a specific task. You define it once with a name and a set of inputs, and you can call it from different places in your program to perform that task again, often returning a result. This encapsulation makes code easier to read and reuse, since the same function can be invoked with different inputs to produce different outputs while keeping the implementation consistent.

A function is focused on one task, which is different from a module that is a larger unit that may contain multiple functions and other resources. Data refers to values a program uses, not executable code, and an operating system is the overall software that manages hardware and provides services, not a single reusable block of code for a particular task.