tutorial headers

C Headers

C code comes in two types of files: .c files, and .h files. The .h files are called header files.

NOTE: .c and .h files are more or less functionally equivalent. However, most tools will assume that .h files are header files, and most people will too. Don't be an asshole. Put your prototypes in .h, and code in .c.

Using headers

Include header files using the #include macro. This gives you access to anything defined by that header.

#include <stdio.h>
// Gives you access to standard IO library functions
// such as printf, scanf

#include <stdbool.h>
// Gives you access to "true" and "false"

#include <stdint.h>
// Defines uint8_t, uint16_t, ... and int8_t, int16_t,...

In order to use functions implemented in RASLib, you will need to #include them. Since RASLib is not a default system library, you'll have to include them relative to the root directory of your project (which is already configured in the makefile).

Documentation for the RASLib headers can be found here.

#include <RASLib/inc/common.h>
// etc. Include headers as needed.