Summary  
This chapter explains how to define functions with parameters and return values, then call them to modularize and reuse code.

General domain of usage  
Automation of repetitive tasks.

A beginner-friendly course introducing the core concepts of C++ programming, featuring hands-on practice chapters to reinforce learning.

Explore the basics of C++ syntax, structure, and the process of writing your first program.

Delve into variable declaration, initialization, and the fundamental data types in C++.

Master the basics of user input and formatted output in C++.

Explore decision-making and repetition in C++ using conditionals and loops.

Learn how to organize code into reusable functions and understand variable scope.

Defining and Calling Functions