Solution (solved my own problem)
In Global.h
, I changed the code to:
#pragma once
#include <SFML\Graphics.hpp>
extern sf::RenderWindow Window;
extern std::string status;
and in Cubes.cpp
, I changed it to:
#include <iostream>
#include "Cubes.h"
#include "Common functions.h"
#include "Global.h"
#include <SFML\Graphics.hpp>
#include <vector>
#include <string>
sf::RenderWindow Window(sf::VideoMode(500, 500), "Maximize window to play the game");
std::string status = "NULL";
solved Error LNK2005 and LNK1169 [closed]