A machine better perceives low-level programming languages than a person. It is different from user-friendly languages, such as Python. If you want to learn the language's basic syntax, you will be interested in chapters without the "Bonus" mark. If you want to "feel" the low-level language, go through the "Bonus" chapters.

C++ is a "middle" level language that allows you to jump both low level to control the hardware and high level to manipulate classes and objects.

C++ is used in cases where it is necessary to manipulate memory, optimize and speed up the calculation process.

This language has a wide variety of libraries and compilers, which allows it to be deployed in many areas, for example:

• Access to the hardware;
• Full optimization;
• Embedded systems;
• Robotics;
• Game-dev;
• System programming (especially Unix-system);
• Creating drivers and viruses.

So, C++ is used when efficient memory access is essential and to add classes and objects to the code.