Book Image

C++ Fundamentals

By : Brent Arnold
Book Image

C++ Fundamentals

By: Brent Arnold

Overview of this book

C++ has come a long way and is now adopted in several contexts. Its key strengths are its software infrastructure and resource-constrained applications, including desktop applications, servers, and performance-critical applications, not to forget its importance in game programming. Despite its strengths in these areas, beginners usually tend to shy away from learning the language because of its steep learning curve. The main mission of this book is to make you familiar and comfortable with C++. You will finish the book not only being able to write your own code, but more importantly, you will be able to read other projects. It is only by being able to read others' code that you will progress from a beginner to an advanced programmer. This book is the first step in that progression.
Table of Contents (6 chapters)
Chapter 2
Functions
Content Locked
Section 7
Const Parameters and Default Arguments
In pass by value, the function parameter is a value type: when invoked, the argument is copied into the parameter. This means that regardless of whether const is used in the parameter or not, the calling code cannot see the difference. The only reason to use const in the function signature is to document to the implementation that it cannot modify such a value. Let us learn this in detail through examples.