A common requirement is to have a collection that can be an arbitrary size and can grow and shrink at runtime. The C++ Standard Library provides various classes to allow you to do this, as will be described in Chapter 8, Using the Standard Library Containers. The following example illustrates some of the principles of how these standard collections are implemented. In general, you should use the C++ Standard Library classes rather than implementing your own. Further, the Standard Library classes encapsulate code together in a class and since we have not covered classes yet, the following code will use functions that potentially can be called incorrectly. So, you should regard this example as just that, example code. A linked list is a common data structure. These are typically used for queues where the order of items is important. For example, a first...
Beginning C++ Programming
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Beginning C++ Programming
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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.
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Table of Contents (11 chapters)
Preface
Free Chapter
Starting with C++
Understanding Language Features
Exploring C++ Types
Working with Memory, Arrays, and Pointers
Using Functions
Introduction to Object-Orientated Programming
Using the Standard Library Containers
Using Strings
Diagnostics and Debugging
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