Проблема работы кода с линукса на винде

#include<string>
#include <ctime>
#include <map>
#include <vector>
#include <fstream>
#include <iostream>
#include<algorithm>
 
class Author{
    //class for describing authors
    std::string name;
    int voteCounter;
public: 
    Author(std::string name)
    {
        this->name = name;
        this->voteCounter = 0;
    }
    std::string getName()
    {
        return this->name;
    }
    void setName(std::string name)
    {
        this->name = name;
    }
    void addVote() //
    {
        voteCounter++;  
    }
    int getVotes() //
    {
        return this->voteCounter;
    }
};
 
class Song{ //
    //class for describing songs
    std::string name;
    Author* author;
    int voteCounter;
public:
    Song(std::string name, Author* author)
    {
        this->author = author;
        this->name = name;
        this->voteCounter = 0;
    }
    Song(){}
    std::string getName()
    {
        return this->name;
    }
    std::string getAuthorName()
    {
        return author->getName();
    }
    void setName(std::string name)
    {
        this->name = name;
    }
    void addVote()
    {
        voteCounter++;
        this->author->addVote();
    }
    int getVotes()
    {
        return this->voteCounter;
    }
};
 
class Fan{
    //class for describing fans
    std::string name;
    int voteCounter;
public:
    Fan(std::string name, int votes)
    {
        this->name = name;
        this->voteCounter = votes;
    }   
    void addVote() 
    {
        voteCounter++;
    }
    int getVotes() 
    {
        return this->voteCounter;
    }
    std::string getName() 
    {
        return this->name;
    }
};
 
class Vote{ 
    //class for describing voices
    Fan* fan; 
    Song* song; 
};
 
 
bool compareAuthorsByVotes(Author a1, Author a2) 
{
    return a1.getVotes() >= a2.getVotes();
}
 
bool compareSongsByVotes(Song s1, Song s2) 
{
    return s1.getVotes() >= s2.getVotes();
}
 
bool compareFansByVotes(Fan f1, Fan f2) 
{
    return f1.getVotes() >= f2.getVotes();
}
 
class VotingSystem{ 
 
    time_t startTime;   //start time
    time_t endTime; //end time 
    int time;           //voting time in seconds
    int numberOfSongs;
    std::map<std::string, Author> nameToAuthor;
    std::vector<Fan> fans;                  
    std::vector<Song> songs; //list of voting positions
 
    void processSongRecord(std::string line) 
    //creating a model of a song that was described by this line
    {
        std::string authorName = line.substr(0, line.find(" - "));
        std::string songName = line.substr(line.find(" - ") + 3, line.size());
        std::map<std::string, Author>::iterator pos;
        pos = nameToAuthor.find(authorName);
        Author* authorPointer;
        if (pos == nameToAuthor.end())
        {
            Author author(authorName);
            pos = nameToAuthor.insert(std::make_pair(authorName, author)).first;
        }
        authorPointer = &(pos->second);
        songs.push_back(Song(songName, authorPointer));
        numberOfSongs++;
    }
 
    void parse(std::string filename) 
    //get info from file and process it 
    {
        std::fstream file;
        file.open(filename);
        numberOfSongs = 0;
        if (file.is_open()) 
        {
            std::string line;
            while (getline(file, line)) 
            {
                processSongRecord(line);
            }
            file.close();
        }
    }
 
    void printVotingList()
    //print voting list positions 
    {
        std::cout << "To vote for songs enter their id's separeted by space\n";
        for (int i = 0; i < numberOfSongs; i++)
        {
            std::cout << "ID: " << i << " " << songs[i].getName() << " by " << songs[i].getAuthorName() << "\n";
        }
    }
 
    void vote()
    //function for voting
    {
        std::cout << "Enter your name, please\n";
        std::string name;
        std::cin >> name;
        int counter = 0;
        printVotingList();
        int id;
        while(true)
        {
            std::cout << "Enter id of song to vote for it. Enter -1 to stop voting ";
            std::cin >> id;
            if (id == -1)
                break;
            songs[id].addVote();
            counter++;
        }
        fans.push_back(Fan(name, counter));
    }
 
    void waiting()
    {
        std::string inp;
        startTime = std::time(0);
        endTime = startTime + time;
        while(std::time(0) < endTime)
        {
            std::cout << "Enter v to vote\n";
            std::cin >> inp;
            if (inp == "v")
                vote();
            else 
                break;
        }
        std::cout << "Voting time is over.\n";
    }
 
    void makeAuthorsFile()
    {
        std::ofstream file;
        file.open("resultAuthorsFile.sol");
        std::vector<Author> authors;
        std::map<std::string, Author>::iterator pos;
        for(pos = nameToAuthor.begin(); pos != nameToAuthor.end(); pos++)
        {
            authors.push_back(pos->second);
        }
        sort(authors.begin(), authors.end(), compareAuthorsByVotes);
        for (int i = 0; i < authors.size(); i++)
        {
            file << authors[i].getName() + "\n";
        }
 
        file.close();
    }
 
    void makeSongsFile()
    {
        std::ofstream file;
        file.open("resultSongsFile.sol");
 
        sort(songs.begin(), songs.end(), compareSongsByVotes);
        for (int i = 0; i < songs.size(); i++)
        {
            file << songs[i].getName() + "\n";
        }
 
        file.close();
    }
 
    void makeFansFile()
    {
        std::ofstream file;
        file.open("resultFansFile.sol");
 
        sort(fans.begin(), fans.end(), compareFansByVotes);
        
        for (int i = 0; i < fans.size(); i++)
        {
            file << fans[i].getName() + "\n";
        }
 
        file.close();
    }
 
    void result()
    {
        makeSongsFile();
        makeAuthorsFile();
        makeFansFile();
    }
 
public:
 
    VotingSystem(std::string fileName, int time)
    {
        parse(fileName);
        this->time = time;
    }
 
    void main()
    {
        waiting();
        result();
    }
};
 
int main()
{
    VotingSystem votingSystem("sample.dat", 60);//data to configure - name of input files and voting time in seconds
    votingSystem.main();
    return 0;
}

void parse(std::string filename)
        //get info from file and process it 
    {
        std::fstream file;
        file.open(filename);

file.open(filename);
if(file)
{
....
}else
  cout<<"файл "<<filename<<" не открылся";