quiz (PL)

#include <iostream>
#include <string>
#include <fstream>
#include <cstdlib>
using namespace std;

/*
 * Format pliku:
 * 1. Dwie pierwsze linie oznaczają kolejno tytuł i autora quizu.
 * 2. Później może nastąpić dowolna liczba zestawów, będących pojedynczym pytaniem.
 *    Każdy z nich powinien mieć długość sześciu linijek, które kolejno oznaczają:
 *  - treść pytania,
 *  - odpowiedzi a, b, c, d,
 *  - prawidłowa odpowiedź (pojedynczy znak).
 * 3. Plik musi nazywać się 'quiz' i mieć rozszerzenie '.txt'.
 */

//---------------------------------------------------------------------------------------------------------------------

class Question {

public:

    void load(int question_number) {

        ifstream file("quiz.txt");
        string line;

        if(file.fail()) exit(1);

        for(int i=0; i<-4+6*question_number; ++i)
            getline(file, line);

        for(int i=0; i<6; i++) {

            getline(file, line);
            switch(i) {

                case 0: content = line;               break;
                case 1:
                case 2:
                case 3:
                case 4: answers[i-1] = line;          break;
                case 5: correct_answer = line.back(); break;
            }
        }
    }

    bool ask() const {

        cout << content << endl;

        char answer_char = 'a';
        for(auto &&this_answer : answers)
            cout << answer_char++ << ") " << this_answer << endl;

        cout << "Twoja odpowiedz: ";
        cin.get(answer_char);

        return answer_char == correct_answer;
    }

private:

    string content, answers[4];
    char   correct_answer;
};

//---------------------------------------------------------------------------------------------------------------------

class Game {

public:

    explicit Game(int new_question_count)
    : score(0), questions_count(new_question_count), questions(new Question[questions_count]) {

        ifstream file("quiz.txt");
        if(file.fail()) exit(1);

        getline(file, title);
        getline(file, author);

        int question_number=1;

        for(auto this_question=questions; this_question!=questions+questions_count; ++this_question)
            this_question->load(question_number++);
    }

    ~Game() {

        delete[] questions;
    }

    void play() {

        cout << "Autor quizu: " << author << endl
             << "Tytul: " << title << endl << endl;

        for(auto this_question=questions; this_question!=questions+questions_count; ++this_question) {

            cin.sync();
            score += this_question->ask();
            cout << endl;
        }

        cout << "Koniec quizu!" << endl
             << "Zdobyte punkty: " << score << endl
             << "Blednych odpowiedzi: " << questions_count-score << endl;

        cin.get();
    }

private:

    int score, questions_count;

    string title, author;
    Question *questions;
};

//---------------------------------------------------------------------------------------------------------------------

int main() {

    int questions_count;
    cout << "Ile pytan jest w Twoim quizie? ";
    cin >> questions_count;
    cout << endl;

    Game this_game(questions_count);
    this_game.play();
}