using namespace std;

class Billet
{
    private:
        string villeArrivee, villeDepart;
        double distance, prixAuKm;

    public:
        Billet(string villeD="", string villeA="", double d=0, double p=0);
        string getVilleDepart();
        string getVilleArrivee();
        double getDistance();
        double getPrixAuKm();
        virtual double getPrixTotal();
        void setVilleDepart(string a);
        void setVilleArrivee(string b);
        void setDistance(double c);
        void setPrixAuKm(double d);
        virtual void saisir();
        void affichage();
        bool compItineraire(Billet b);
        int compPrixBillet(Billet b);
        void affichage(ostream &out);
};

double saisieD();