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Beginning C++ Programming

You're reading from   Beginning C++ Programming Modern C++ at your fingertips!

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Product type Paperback
Published in Apr 2017
Publisher Packt
ISBN-13 9781787124943
Length 526 pages
Edition 1st Edition
Languages
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Author (1):
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Richard Grimes Richard Grimes
Author Profile Icon Richard Grimes
Richard Grimes
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Toc

Table of Contents (11) Chapters Close

Preface 1. Starting with C++ FREE CHAPTER 2. Understanding Language Features 3. Exploring C++ Types 4. Working with Memory, Arrays, and Pointers 5. Using Functions 6. Classes 7. Introduction to Object-Orientated Programming 8. Using the Standard Library Containers 9. Using Strings 10. Diagnostics and Debugging

Using pointers in C++

Pointers are clearly very important in C++, but as with any powerful feature, there are issues and dangers, so it is worth pointing out some of the major issues. A pointer points to a single location in memory, and the type of the pointer indicates how the memory location should be interpreted. The very most you can assume is the number of bytes at that position in memory is the size of the type of the pointer. That's it. This means that pointers are inherently unsafe. However, in C++ they are the quickest way to enable code within your process to access large amounts of data.

Accessing out of bounds

When you allocate a buffer, whether on the stack or on the free store, and you get a pointer, there...

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