You do not have to understand the concepts in this appendix to become well-versed in C++. You can master C++, however, only if you spend some time learning about the behind-the-scenes roles played by binary numbers. The material presented here is not difficult, but many programmers do not take the time to study it; hence, there are a handful of C++ masters who learn this material and understand how C++ works “under the hood,” and there are those who will never master the language as they could.
You should take the time to learn about addressing, binary numbers, and hexadecimal numbers. These fundamental principles
are presented here for you to learn, and although a working knowledge of C++ is possible without knowing them, they greatly enhance your C++ skills (and your skills in every other programming language).
After reading this appendix, you will better understand why different C++ data types hold different ranges of numbers. You also will see the importance of being able to represent hexadecimal numbers in C++, and you will better understand C++ array and pointer addressing.
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