/
Quote.cc
72 lines (62 loc) · 1.63 KB
/
Quote.cc
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#include <iostream>
#include <string>
class Quote {
public:
Quote() = default;
Quote(const std::string &book, double sales_price):
bookNo(book), price(sales_price) { }
std::string isbn() const { return bookNo; }
virtual double net_price(std::size_t n) const { return n * price; }
virtual ~Quote() = default;
private:
std::string bookNo;
protected:
double price = 0.0;
};
class Bulk_quote : public Quote {
public:
Bulk_quote() = default;
Bulk_quote(const std::string &book, double p, std::size_t qty, double disc)
: Quote(book, p), min_qty(qty), discount(disc) { }
double net_price(std::size_t) const override;
private:
std::size_t min_qty = 0;
double discount = 0.0;
};
double
Bulk_quote::net_price(std::size_t cnt) const
{
if (cnt >= min_qty)
return cnt * (1 - discount) * price;
else
return Quote::net_price(cnt);
}
double
print_total(std::ostream &os, const Quote &item, std::size_t n)
{
double ret = item.net_price(n);
os << "ISBN: " << item.isbn()
<< " # sold: " << n << " total due: " << ret << std::endl;
return ret;
}
int
main()
{
Quote basic("XY-98763454234", 20.05);
Bulk_quote bulk("XY-83243234123", 45.98, 30, 0.2);
print_total(std::cout, basic, 20);
print_total(std::cout, bulk, 39);
Quote item;
Quote *p = &item;
p = &bulk;
Quote &r = bulk;
//Bulk_quote *bulkP = &basic;
//Bulk_quote &bulkRef = basic;
//Quote *itemP = &bulk;
//Bulk_quote *bulkP = itemP;
Quote item1(bulk);
item = bulk;
Quote *baseP = &bulk;
double undiscounted = baseP->Quote::net_price(42);
return 0;
}