I want to change the background color of the output screen in Dev-C++. How can I do that?

I searched the Internet but didn't find any.

Any help on which function should I use?

Thank you!

I want to ask another thing

http://www.uniqueness-template.com/devcpp/

This website tells the method to include the header file graphics.h. Does including this library allow me to use functions that only Borland C++ compiler supports?

Well if you keep reading, it tells you exactly what you need.