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main.cpp

#include <iostream>
#include "Vehicle.h"
#include "Sedan.h"
#include "Truck.h"using namespace std;int main()
{Vehicle vehicle("Generic", 100, "Gray", Date(2005, 6, 6));Sedan sedan1("Toyota", 200, "Red", Date(2020, 1, 15), 5, 4);Sedan sedan2("Honda", 201, "Blue", Date(2021, 5, 20), 4, 6);Truck truck1("Ford", 300, "Black", Date(2019, 10, 5), 18, 40.0);Truck truck2("Chevy", 301, "Silver", Date(2022, 3, 10), 20, 50.0);Vehicle* vehicles[] = {&vehicle, &sedan1, &sedan2, &truck1, &truck2};for (const auto& vehiclePtr : vehicles){vehiclePtr->print();}return 0;
}

Date.h

#ifndef DATE_H#define DATE_H
#include <iostream>using namespace std;class Date
{friend class Vehicle;
public:Date();Date(int y, int m, int d);~Date();void setYear(int y);void setMonth(int m);void setDay(int d);int getYear();int getMonth();int getDay();void print();
private:int Year;int Month;int Day;};
#endif // DATE_H

 Date.cpp

#include "Date.h"
#include <iostream>
using namespace std;Date::Date()
{Year = 0;Month = 0;Day = 0;
}Date::Date(int year, int month, int day)
{setYear(year);setMonth(month);setDay(day);
}Date::~Date()
{//cout << "object Destructor is called" << endl;
}void Date::setYear(int year)
{Year = year;
}void Date::setMonth(int month)
{Month = month;
}void Date::setDay(int day)
{Day = day;
}int Date::getYear()
{return Year;
}int Date::getMonth()
{return Month;
}int Date::getDay()
{return Day;
}void Date::print()
{cout << endl;cout << "Year :" << getYear() << endl;cout << "Month :" << getMonth() << endl;cout << "Day :" << getDay() << endl;
}

Sedan.h

#ifndef SEDAN_H#define SEDAN_H
#include <iostream>#include "Vehicle.h"
using namespace std;class Sedan :public Vehicle
{
public:Sedan();Sedan(string brand, int model, string color, Date MFD, int NOP, int NOA);~Sedan();void setNumberOfPassenger(int P);int getNumberOfPassenger();void setNumberOfAirbag(int A);int getNumberOfAirbag();void print();
private:int NumberOfPassenger;int NumberOfAirbag;
};
#endif // SEDAN_H

Sedan.cpp

#include "Sedan.h"
#include <iostream>using namespace std;Sedan::Sedan()
{NumberOfPassenger = 0;NumberOfAirbag = 0;
}Sedan::Sedan(string brand, int model, string color, Date MFD, int NOP, int NOA)
{setBrand(brand);setModel(model);setColor(color);setManufactureDate(MFD);setNumberOfPassenger(NOP);setNumberOfAirbag(NOA);
}Sedan::~Sedan()
{}void Sedan::setNumberOfPassenger(int P)
{NumberOfPassenger = P;
}int Sedan::getNumberOfPassenger()
{return NumberOfPassenger;
}void Sedan::setNumberOfAirbag(int A)
{NumberOfAirbag = A;
}int Sedan::getNumberOfAirbag()
{return NumberOfAirbag;
}void Sedan::print()
{Vehicle::print();cout << "Number of Passengers: " << NumberOfPassenger << ", Number of Airbags: " << NumberOfAirbag << endl;
}

Truck.h

#ifndef TRUCK_H
#define TRUCK_H#include "Vehicle.h"using namespace std;class Truck : public Vehicle
{
public:Truck();Truck(string brand, int model, string color, Date MFD, int NOW, double TC);~Truck();void setNumberOfWheel(int NOW);int getNumberOfWheel();void setTowingCapacity(double TC);double getTowingCapacity();void print();
private:int NumberOfWheel;double TowingCapacity;
};#endif // TRUCK_H

Truck.cpp

#include "Truck.h"
#include <iostream>using namespace std;Truck::Truck()
{NumberOfWheel = 0;TowingCapacity = 0;
}
Truck::Truck(string brand, int model, string color, Date MFD, int NOW, double TC)
{setBrand(brand);setModel(model);setColor(color);setManufactureDate(MFD);setNumberOfWheel(NOW);setTowingCapacity(TC);
}Truck::~Truck()
{}void Truck::setNumberOfWheel(int NOW)
{NumberOfWheel = NOW;
}int Truck::getNumberOfWheel()
{return NumberOfWheel;
}void Truck::setTowingCapacity(double TC)
{TowingCapacity = TC;
}double Truck::getTowingCapacity()
{return TowingCapacity;
}void Truck::print()
{Vehicle::print();cout << "Number of Wheels: " << NumberOfWheel << ", Towing Capacity: " << TowingCapacity << " tons" << endl;
}

Vehicle.h

#ifndef VEHICLE_H#define VEHICLE_H#include <iostream>
#include "Date.h"
using namespace std;class Vehicle
{
public:Vehicle();Vehicle(string brand, int model, string color, Date MFD);~Vehicle();void setBrand(string brand);string getBrand();void setModel(int id);int getModel();void setColor(string color);string getColor();void setManufactureDate(Date d);Date getManufactureDate();virtual void print();
private:string Brand;int Model;string Color;Date ManufactureDate;
};
#endif // VEHICLE_H

Vehicle.cpp

#include "Vehicle.h"
#include <iostream>using namespace std;Vehicle::Vehicle()
{Brand = "XXX";Model = 10086;Color = "Black";
}Vehicle::Vehicle(string brand, int model, string color, Date MFD)
{setBrand(brand);setModel(model);setColor(color);setManufactureDate(MFD);
}Vehicle::~Vehicle()
{}void Vehicle::setBrand(string brand)
{Brand = brand;
}string Vehicle::getBrand()
{return Brand;
}void Vehicle::setModel(int id)
{Model = id;
}int Vehicle::getModel()
{return Model;
}void Vehicle::setColor(string color)
{Color = color;
}string Vehicle::getColor()
{return Color;
}void Vehicle::setManufactureDate(Date d)
{ManufactureDate = d;
}Date Vehicle::getManufactureDate()
{return ManufactureDate;
}void Vehicle::print()
{cout << "Brand: " << Brand << ", Model: " << Model << ", Color: " << Color << ", ManufactureDate: ";ManufactureDate.print();cout << endl;
}

Result: