Book Image

Beginning C++ Programming

By : Richard Grimes
Book Image

Beginning C++ Programming

By: Richard Grimes

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. The first task is to familiarize you with the structure of C++ projects so you will know how to start reading a project. Next, you will be able to identify the main structures in the language, functions, and classes, and feel confident being able to identify the execution flow through the code. You will then become aware of the facilities of the standard library and be able to determine whether you need to write a routine yourself, or use an existing routine in the standard library. Throughout the book, there is a big emphasis on memory and pointers. You will understand memory usage, allocation, and access, and be able to write code that does not leak memory. Finally, you will learn about C++ classes and get an introduction to object orientation and polymorphism.
Table of Contents (11 chapters)

Working with Memory, Arrays, and Pointers

C++ allows you to have direct access to memory through pointers. This gives you a lot of flexibility, and potentially it allows you to improve the performance of your code by eliminating some unnecessary copying of data. However, it also provides an extra source of errors; some can be fatal for your application or worse (yes, worse than fatal!) because poor use of memory buffers can open security holes in your code that can allow malware to take over the machine. Clearly pointers are an important aspect of C++.

In this chapter, you'll see how to declare pointers and initialize them to memory locations, how to allocate memory on the stack and, C++ free store, and how to use C++ arrays.