Thanks to visit codestin.com
Credit goes to github.com

Name		Name	Last commit message	Last commit date
parent directory ..
Test_files		Test_files
0-object_like_macro.h		0-object_like_macro.h
1-pi.h		1-pi.h
2-main.c		2-main.c
3-function_like_macro.h		3-function_like_macro.h
4-sum.h		4-sum.h
README.md		README.md

README.md

preprocessor

General

What are macros and how to use them

What are the most common predefined macros

How to include guard your header files