Header vs source file

Question

What is the difference between a header file and a source file, and what are they used for?

Answer 1

https://stackoverflow.com/questions/2596449/including-includes-in-header-file-vs-source-file

Answer 2

Headers are usually for declaring classes or functions in a namespace. Source files are for implementing and defining what you decalred in a header. This speeds up compilation times drastically, especially if you forward declare stuff in headers.