Question

**CODE in C++

**Include the UML and Class activity diagram.

ABC pies sells two types of pies (pumpkin and pecan ) and allows customers to order a specific number of pies. When an order is made, the overall price is calculated based on the type of pie.

If a pecan pie order is made, you get a discount of half off from the total price if the season fall or winter. If the season is summer , $2.50 should be added to the total price to account for extra labor.

If a pumpkin pie order is made, you get a discount of half off if you have an extra flavor of chocolate or caramel. If you have an extra flavor of vanilla and the number of orders is greater than or equal to 5, $20.99 should be added to the total order price.

1.Create an abstract base class called Pie.

2.Create additional classes that would be used in solving the above scenario. They should inherit the constructor from the base class and implement a pure virtual function that calculates the total cost. Nothing else should be present in these derived classes.

Answer 1

// C++ program to create an abstract base class Pie and derived classes PecanPie and PumpkinPie

#include <iostream>

#include <iomanip>

using namespace std;

// abstract class Pie

class Pie

{

       int quantity;

public:

       const static double price = 5.00; // setting a constant price for a pie

       Pie(int quantity);

       virtual double totalCost()=0; // pure virtual function

       int getQuantity() const;

};

Pie::Pie(int quantity) : quantity(quantity)

{}

int Pie::getQuantity() const

{

       return quantity;

}

// derived class PecanPie

class PecanPie : public Pie

{

       string season;

public:

       PecanPie(int quantity, string season);

       double totalCost();

};

PecanPie::PecanPie(int quantity, string season) : Pie(quantity) , season(season)

{}

double PecanPie::totalCost()

{

       double cost = getQuantity()*price;

       if((season.compare("fall") == 0) || (season.compare("winter") == 0))

             cost = cost/2;

       else if(season.compare("summer") == 0)

             cost += 2.5;

       return cost;

}

// derived class PumpkinPie

class PumpkinPie: public Pie

{

       string flavor;

public:

       PumpkinPie(int quantity, string flavor);

       double totalCost();

};

PumpkinPie::PumpkinPie(int quantity, string flavor) : Pie(quantity) , flavor(flavor)

{}

double PumpkinPie::totalCost()

{

       double cost = getQuantity()*price;

       if((flavor.compare("chocolate") == 0) || (flavor.compare("caramel") == 0))

             cost = cost/2;

       else if((flavor.compare("vanilla") == 0 ) && (getQuantity() >= 5))

             cost += 20.99;

       return cost;

}

int main() {

       //test the classes

       PecanPie pie1(10,"summer"), pie2(5,"fall"), pie3(7,"winter"), pie4(12,"spring");

       PumpkinPie pPie1(10,"chocolate"), pPie2(5,"caramel"), pPie3(4,"vanilla"), pPie4(7,"vanilla"), pPie5(10,"mango");

       cout<<"Pecan Pie 1 cost : $"<<fixed<<setprecision(2)<<pie1.totalCost()<<endl;

       cout<<"Pecan Pie 2 cost : $"<<fixed<<setprecision(2)<<pie2.totalCost()<<endl;

       cout<<"Pecan Pie 3 cost : $"<<fixed<<setprecision(2)<<pie3.totalCost()<<endl;

       cout<<"Pecan Pie 4 cost : $"<<fixed<<setprecision(2)<<pie4.totalCost()<<endl;

       cout<<"Pumpkin Pie 1 cost : $"<<fixed<<setprecision(2)<<pPie1.totalCost()<<endl;

       cout<<"Pumpkin Pie 2 cost : $"<<fixed<<setprecision(2)<<pPie2.totalCost()<<endl;

       cout<<"Pumpkin Pie 3 cost : $"<<fixed<<setprecision(2)<<pPie3.totalCost()<<endl;

       cout<<"Pumpkin Pie 4 cost : $"<<fixed<<setprecision(2)<<pPie4.totalCost()<<endl;

       cout<<"Pumpkin Pie 5 cost : $"<<fixed<<setprecision(2)<<pPie5.totalCost()<<endl;

       return 0;

}

//end of program

Output:

Pecan Pie 1 cost $52.50 Pecan Pie 2 cost $12.50 Pecan Pie 3 cost $17.50 Pecan Pie 4 cost $60.00 Pumpkin Pie 1 cost $25.00 Pumpkin Pie 2 cost $12.50 Pumpkin Pie 3 cost $20.00 Pumpkin Pie 4 cost $55.99 Pumpkin Pie 5 cost $50.00