c-guide.md

C Specific Advice

Object Oriented Programming in C

C does not support real OOP but the following rules can help to transfer some ideas of OOP to C.

• Think of a file as a class: Functions that appear in the header file are public, while functions that only appear in the .c files are private.

• Create namespaces: use a capital prefix before each “public” function name to indicate their belonging to a certain source file. For example, in led.c use LED_switchOn( redLed ); instead of switchOn(redLed)

• Use structs to encapsulate attributes: Instead of individual variables, group variables that would belong to a class in a struct. You can then pass a reference of this struct as the first argument to a function.

Further

• Constants: for constants prefer const over preprocessor #define
• Booleans: Use bool from stdbool.h whenever you have a boolean value
• Sizeof: use sizeof on the variable; not the type