#include <iostream>
#include <vector>
#include <iomanip>

using namespace std;

class Package
{
protected:
  int barcode;
  double weight;
  double costperounce;
public:
  Package(int = 0, double = 0, double = 1);
  virtual ~Package(){};
  double calculateCost(void);
  virtual void print(void);
};

Package::Package(int brcode, double wgt, double cst)
  : barcode{brcode}, weight{wgt}, costperounce{cst}
   {      
   }
double Package::calculateCost()
{
  return (weight * costperounce);
}

void Package::print()
{
  cout << "Barcode: " << barcode << "\t"
       << "Weight: " << weight << " oz" << "\t" 
       << "Cost per oz: $" << left << setw(4)  << costperounce << "\t\t\t\t"
       << "Total cost: $" << calculateCost() << "\t\n";
}

class TwoDayPackage : public Package
{
private:
  double flatfee;
public:
  TwoDayPackage(int = 0, double = 0, double = 1, double = 0);
  double calculateCost(void);
  void print(void) override;
};

TwoDayPackage::TwoDayPackage(int brcode, double wgt, double cst,double fee)
  : Package(brcode, wgt, cst), flatfee{fee}
   {      
   }
double TwoDayPackage::calculateCost()
{
  return (weight * costperounce + flatfee);
}
void TwoDayPackage::print()
{
  cout << "Barcode: " << barcode << "\t" 
       << "Weight: " << weight << " oz" << "\t" 
       << "Cost per oz: $"<< left << setw(4) << costperounce << "\t" 
       << " Flat fee: " << flatfee<<  "\t"<< "\t" 
       << "Total cost: $" << calculateCost() << "\t\n";
}

class OvernightPackage : public Package
{
private:
  double xfeeperounce;
public:
  OvernightPackage(int = 0, double = 0, double = 1, double = 0);
  double calculateCost(void);
  void print(void) override;
};

OvernightPackage::OvernightPackage(int brcode, double wgt, double cst,double fee)
  : Package(brcode, wgt, cst), xfeeperounce{fee}
   {      
   }
double OvernightPackage::calculateCost()
{
  return (weight * (costperounce + xfeeperounce));
}
void OvernightPackage::print()
{
  cout << "Barcode: " << barcode << "\t"
       << "Weight: " << weight << " oz" << "\t" 
       << "Cost per oz: $" << left << setw(4)  
         << costperounce +xfeeperounce<< " ($" 
         << xfeeperounce << " O/N extra fee)" <<"\t"<< "\t" 
       << "Total cost: $" << calculateCost() << "\t\n";
}


int main()
{
   
   cout << "\nOriginal output:\n";
   Package pack(1235434, 12, 1);
   Package pack1(1234434, 10, 1.10);
   pack.print();
   TwoDayPackage twopack(12345678, 12, 1, 13);
   twopack.print();
   OvernightPackage ovpack(12345678, 12, 1, 2.50);
   ovpack.print();
   cout << endl;

   vector <Package> packages={pack, pack1, twopack, ovpack};
   cout << "Output using a vector of Package objects:\n";
   
   for(auto elem : packages)
      elem.print();
   
   cout << endl;

   //Package * basePtr =&twopack; //Base pointer pointing to derived object.

  vector <Package *> packagePtr={&pack, &pack1, &twopack, &ovpack};
 cout << "Output using a vector of Package pointers:\n";
   for(auto elem : packagePtr)
      elem->print();
   
   cout << endl;

}