C FunctionsLesson 23Free preview

C Functions

This lesson is part of C · All levels

Summary

Function is a block of code named designed to perform a specific task and can be called many times from any part of a program. Using the function makes code more modular, easier to test, and reduces duplication. A function can receive a parameter as input and return a value via the statement return. In C, a function must be declared or defined before being called in for the compiler to know it.

Key points

The function consists of the return type, name, parameters, and blocks of the function body
Return sends the value back to the caller and ends the function
The void function does not return the value at all
This structure encourages modular code and avoids duplication of logic.

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