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Ch15_Item_base.h
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Ch15_Item_base.h
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#ifndef CH15_ITEM_BASE_H
#define CH15_ITEM_BASE_H
#include <iostream>
#include <string>
class Item_base
{
public:
Item_base( const std::string &book = "",
double sales_price = 0.0) :
isbn(book), price(sales_price)
{
std::cout << "Item_base() -- constructor" << std::endl;
};
virtual ~Item_base();
Item_base( const Item_base& );
Item_base& operator=( const Item_base& );
std::string book() const
{
return isbn;
}
virtual double net_price( std::size_t n ) const
{
return price * n;
}
protected:
double price;
private:
std::string isbn;
};
class Bulk_item : public Item_base
{
public:
Bulk_item( const std::string& book = "",
double sales_price = 0.0,
std::size_t qty = 0,
double disc_rate = 0.0) :
Item_base(book, sales_price),
quantity(qty), discount(disc_rate)
{
//ctor
std::cout << "Bulk_item() -- constructor" << std::endl;
}
virtual ~Bulk_item();
Bulk_item( const Bulk_item& );
Bulk_item& operator=( const Bulk_item& );
double net_price( std::size_t ) const;
protected:
private:
std::size_t quantity;
double discount;
};
#endif // CH15_ITEM_BASE_H