Класс "Корабль"

#include <iostream>
 
class WrongValueException{};
 
class Ship {
    private:
        std::string name;
        int fuelAmount;
        int currentFuel;
        int passengers;
        int totalDistance;
        double currentPrice;
        double priceDecrement;
        
        template <typename T>
        void validateValue(T value) {
            if (value < 0) throw WrongValueException();
        }
    public:
        Ship(const std::string& name, int currentFuel) : name(name), currentFuel(currentFuel) {
            this->fuelAmount = currentFuel;
            this->currentPrice = 10000;
            this->passengers = 0;
            this->totalDistance = 0;
            this->priceDecrement = 1.2;
        }
        ~Ship() {}
        
        const std::string& getName() const {
            return name;
        }
        int getCurrentFuel() const {
            return currentFuel;
        }
        int getFuelAmount() const {
            return fuelAmount;
        }
        int getPassengers() const {
            return passengers;
        }
        int getTotalDistance() const {
            return totalDistance;
        }
        double getCurrentPrice() const {
            return currentPrice;
        }
        double getPriceDecrement() const {
            return priceDecrement;
        }
        
        void setName(std::string name) {
            this->name = name;
        }
        void setCurrentFuel(int fuel) {
            validateValue<int>(fuel);
            this->currentFuel = fuel;
        }
        void setPassengers(int passengers) {
            validateValue<int>(passengers);
            this->passengers = passengers;
        }
        void setTotalDistance(int miles) {
            validateValue<int>(miles);
            this->totalDistance = miles;
        }
        void setCurrentPrice(double price) {
            validateValue<double>(price);
            this->currentPrice = price;
        }
        void setPriceDecrement(double dec) {
            validateValue<double>(dec);
            this->priceDecrement = dec;
        }
        
        void move(int miles) {
            validateValue<int>(miles);
            double priceBuffer;
            
            if (miles > this->currentFuel) miles = this->currentFuel;
            
            priceBuffer = miles * this->priceDecrement;
            
            if (priceBuffer > this->currentPrice) this->currentPrice = 0;
            else this->currentPrice -= priceBuffer;
            
            this->totalDistance += miles;
            this->currentFuel -= miles;
            std::cout << this->getName() << " moves " << miles << " miles" << std::endl;
        }
        void takePassengers(int passengers) {
            validateValue<int>(passengers);
            
            this->passengers += passengers;
            std::cout << this->getName() << " takes " << passengers << " passengers" << std::endl;
        }
        void leftPassengers(int passengers) {
            validateValue<int>(passengers);
            
            if (passengers > this->passengers) passengers = this->passengers;
            
            this->passengers -= passengers;
            std::cout << this->getName() << " left " << passengers << " passengers" << std::endl;
        }
        void showInformation() {
            std::cout << this->getName() << ":\n";
            std::cout << "   Fuel: [" << this->getCurrentFuel();
            std::cout << "/" << this->getFuelAmount() << "]\n";
            std::cout << "   Price: " << this->getCurrentPrice() << "\n";
            std::cout << "   Price decrement: " << this->getPriceDecrement() << "\n";
            std::cout << "   Passengers: " << this->getPassengers() << "\n";
            std::cout << "   Distance: " << this->getTotalDistance() << std::endl;
        }
};
 
int main() {
    Ship* ship = new Ship("Titanic", 8000);
    
    ship->showInformation();
    
    std::cout << "\n = = = = = = = = = = = = = = = \n" << std::endl;
    
    ship->takePassengers(1000);
    ship->move(800000);
    ship->leftPassengers(450);
    
    std::cout << "\n = = = = = = = = = = = = = = = \n" << std::endl;
    
    ship->showInformation();
    
    return 0;
}