Explanation of Solution
Program:
File name: sale.h
//include libraries
#ifndef SALE_H
#define SALE_H
#include <iostream>
using namespace std;
//using the namespace
namespace salesavitch
{
//create a class
class Sale
{
//define access specifier
public:
//declare the constructors
Sale();
Sale(double thePrice);
//define required methods
double bill() const;
double savings(const Sale& other) const;
//define access specifier
protected:
//declare required variables
double price;
};
//define an overloaded method
bool operator <(const Sale& first, const Sale&
second);
}
#endif // SALE_H
File name: discount.h
//include libraries
#ifndef DISCOUNTSALE_H
#define DISCOUNTSALE_H
#include "sale.h"
//using the namespace
namespace salesavitch
{
//create a class
class DiscountSale : public Sale
{
//define access specifier
public:
//declare the constructors
DiscountSale();
DiscountSale(double the_price, double the_discount);
//Discount is expressed as a percent of the price.
virtual double bill() const;
//define access specifier
protected:
//declare required variable
double discount;
};
}
#endif //DISCOUNTSALE_H
File name: sale.cpp
//include libraries
#include "sale.h"
//using the namespace
namespace salesavitch
{
//define a constructor
Sale::Sale() : price(0)
{}
//define a constructor
Sale::Sale(double the_price) : price(the_price)
{}
//declare a method
double Sale::bill() const
{
//return statement
return price;
}
//declare a method
double Sale::savings(const Sale& other) const
{
//return statement
return ( bill() - other...
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Chapter 15 Solutions
Problem Solving with C++ (10th Edition)
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