A Tour of C++

C++ is a compiled language. The details are irrelevant, however what you need to know is that the file that you write C++ on has to be converted into a file that a computer can read, full of 1s and 0s.

C++ is a statically typed language. This means that the type of everything has to be known at compile time (the type of a variable can't change dynamically during the time at which the code is running).

When you write C++ and write some code that involves tinkering with the hardware/your system (e.g. Windows, MacOS, Linux), the resulting binary is not portalbe. This means it's super annoying, and you have to code portable code specifically, meaning you have to write code that works for many different systems—which can, but not always require writing the same code twice in different flavors.