Functions in C++ are a fundamental building block that allows for code modularity and reuse. They enable developers to encapsulate a block of code that performs a specific task and can be called upon when needed throughout the program.

Basic Function Structure

A function in C++ is defined with a return type, a name, and a set of parameters enclosed in parentheses. The body of the function, enclosed in curly braces {}, contains the code that executes when the function is called. Here's a simple example of a function definition:

In this example, myFunction is the name of the function, and void indicates that the function does not return any value.

Calling a Function

To execute the code within a function, you need to call it by its name followed by parentheses:

Function Declaration and Definition

A function in C++ consists of two main parts: