Summary

In this chapter, we introduced the details of program execution. We discussed functions and the main() function with some of its special properties. We found out how the recursion works and that the main() function cannot be called recursively.

As C++ is one of the few high-level languages that supports low-level programming concepts such as accessing memory bytes by their address, we studied how data resides in the memory and how can we incorporate pointers in accessing that data. Understanding these details is a must for a professional C++ programmer.

Lastly, we touched on the topic of conditionals and loops from the perspective of an assembly language. Throughout the chapter, we introduced C++20 features.

In the next chapter, we will learn more about object-oriented programming (OOP), including the inner details of the language object model. We will dive into the details of virtual functions and see how to use polymorphism.