Using headers and folders in Dev C++

Hello fellow programmers. I hope you are all having a nice day today.

Well, my question is about headers in Dev C++.
In my tutorial class, my lecturer advices students to use header files. Also, in class we use Microsoft Visual C++ and usually when I compile program with header files, it works and gives out outputs.

At home, I use Dev C++ to practice but I get really confused because I'm not sure which file is being compiled first. I know writing #include "Example.h" in any cpp files will include the desired header files but what if I have multiple cpp files?

I hope my doubts on headers in Dev C++ is clear enough to be answered. Thank you.

.cpp files are compiled separately and linked by the linker after they are all compiled. If it matters to you which file is compiled first, then either (1) you're doing it wrong or (2) you're not quite clear on how linking works.

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Originally Posted by Lillers

In my tutorial class, my lecturer advices students to use header files.

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You mean it is possible for you not to use headers at all?