#pragma once
#include "main.h"
#include "fileCommands.hpp"//!!!Problem
#include "fileObject.hpp"
class FileSystemUser {
    ...
    void start() {
        FileCommands fc;
        ...
    }
   ....
}

#pragma once
#include "main.h"
#include "stringService.hpp"
#include "fileSystemUser.hpp" //!!!Problem
#include "debug.hpp"
class FileCommands {
    int analyze(string command, FileSystemUser* fileSystem) {...}
}