How to set priority of conflicting headers c++

Question

Imagine you have two something.h in two different directories. You cannot write to those directories and do not have root access.

You have code that does :

#include <something.h>

How do you specify use the something.h in a specific directory and ignore the other ?

Answer 1

try using:
#include "../directory/something.h"
Note that GCC looks for headers using the Search Path.
You can also ask GCC to look for header files in specified directories. Use -iquote dir, to add the directory dir to the head of the list of directories to be searched for header files.