How to specify path to g++ linker and compiler?

Question

C++ / C#

How to specify path to g++ linker and compiler?
Given the fact that the hierarchy is:


main.cpp
|
|
|src-|
......|
.......|main_game.cpp
.......|main_game.h

I searched the Internet, but did not find anything useful.
Thanks in advance.

Answer 1

In main.cpp
#include "src/main_game.h"