Organization of C files

Question

I\'m used to doing all my coding in one C file. However, I\'m working on a project large enough that it becomes impractical to do so. I\'ve been #including them together but

Answer 1

Try to make each .c focus on a particular area of functionality. Use the corresponding .h file to declare those functions.

Each .h file should have a 'header' guard around it's content. For example:

#ifndef ACCOUNTS_H
#define ACCOUNTS_H
....
#endif

That way you can include "accounts.h" as many times as you want, and the first time it's seen in a particular compilation unit will be the only one that actually pulls in its content.