C++ is a compiled language, which means that in order to run a program, one must convert it to machine-level language.

Previously, we've seen some different ways to create a thread instance and how to manage them using the `join()` and `detach()` methods.

In any language, threads can be a very useful tool to do a certain task more efficiently by allowing the program to do multiple operations (e.g. input, processing, storage and output) at the same time.