Summary  
Functions enable encapsulating reusable blocks of code by defining them with names, parameters, and optional return values, and invoking them through function calls to promote modular and maintainable programming.

General domain of usage  
Software development

A beginner-friendly course introducing the essential concepts of C++ programming, including syntax, variables, control flow, functions, and basic data structures. Each section builds foundational knowledge, with practice challenges to reinforce learning.

Learn the basics of C++ syntax, structure, and how to write your first simple programs.

Understand how to declare, initialize, and use variables of different data types in C++.

Learn how to control the flow of your program using conditionals and loops.

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

Work with collections of data using arrays and manipulate text using C++ strings.

Defining and Calling Functions

Defining and Calling Functions