What is header files in c programming

Answer 1

The header (.h) files are normally used to store your #includes.
This way you can simply include the .h file in your .c file and the code will be cleaner.

And instead of including it like normal libraries:
#include <stdio.h>

You do it with parentheses:
#include "myLibs.h"

Answer 2

Yes, correct.
Check out this article, you will learn everything you need to know there.

https://www.tutorialspoint.com/cprogramming/c_header_files.htm

Answer 3

Pieces of code that you can import to your project.