Consider the classes class cashRegister and dispenserTypegiven in the Programming Example Juice Machine in Chapter 10.

In the class cashRegister, add the functions to overload the binary operators + and to add and subtract an amount in a cash register; the relational operators to compare the amount in two cash registers; and the stream insertion operator for easy output.

The class dispenserType, in the Programming Example Juice Machine in Chapter 10, is designed to implement a dispenser to hold and release products. In this class, add the functions to overload the increment and decrement operators to increment and decrement the number of items by one, respectively, and the stream insertion operator for easy output.

Write a program to test the classes designed in steps 1 and 2.

cashRegister.cpp

#include

#include "cashRegister.h"

using namespace std;

int cashRegister::getCurrentBalance() const { return cashOnHand; }

cashRegister::cashRegister(int cashIn) { if (cashIn >= 0) cashOnHand = cashIn; else cashOnHand = 500; }

// Define the functions to overload the '+' and '-' operators below

bool cashRegister::operator==(const cashRegister& cashR) const { return (cashOnHand == cashR.cashOnHand); } bool cashRegister::operator!=(const cashRegister& cashR) const { return (cashOnHand != cashR.cashOnHand); } bool cashRegister::operator<=(const cashRegister& cashR) const { return (cashOnHand <= cashR.cashOnHand); }

bool cashRegister::operator<(const cashRegister& cashR) const { return (cashOnHand < cashR.cashOnHand); }

bool cashRegister::operator>=(const cashRegister& cashR) const { return (cashOnHand >= cashR.cashOnHand); }

bool cashRegister::operator>(const cashRegister& cashR) const { return (cashOnHand > cashR.cashOnHand); }

ostream& operator<<(ostream& os, const cashRegister& cashR) { os << cashR.cashOnHand;

return os; }

cashRegister.h

#include

using namespace std; class cashRegister { friend ostream& operator<<(ostream&, const cashRegister&); public: int getCurrentBalance() const;

// Declare the functions for the overloaded operators '+' and '-' below

bool operator==(const cashRegister& cashR) const; bool operator!=(const cashRegister& cashR) const; bool operator<=(const cashRegister& cashR) const; bool operator<(const cashRegister& cashR) const; bool operator>=(const cashRegister& cashR) const; bool operator>(const cashRegister& cashR) const;

cashRegister(int cashIn = 500);

private: int cashOnHand; //variable to store the cash //in the register };

dispenserType.cpp

//********************************************************** // Author: D.S. Malik // // Implementation file dispenserType.cpp // This file contains the definitions of the functions to // implement the operations of the class dispenserType. //********************************************************** #include #include "dispenserType.h"

using namespace std;

int dispenserType::getNoOfItems() const { return numberOfItems; }

int dispenserType::getCost() const { return cost; }

// Define the functions for the pre- and post- increment and decrement operators below. dispenserType::dispenserType(int setNoOfItems, int setCost) { if (setNoOfItems >= 0) numberOfItems = setNoOfItems; else numberOfItems = 50;

if (setCost >= 0) cost = setCost; else cost = 50; }

ostream& operator<<(ostream& os, const dispenserType& disp) { os << "Cost: " << disp.cost << ", quantity " << disp.numberOfItems;

return os; }

dispenserType.h

#include

using namespace std; class dispenserType { friend ostream& operator<<(ostream&, const dispenserType&); public: int getNoOfItems() const;

int getCost() const;

void makeSale();

// Declare the functions for the overloaded increment and decrement operators below dispenserType operator++(); dispenserType operator++(int); dispenserType operator--(); dispenserType operator--(int);

dispenserType(int setNoOfItems = 50, int setCost = 50);

private: int numberOfItems; //variable to store the number of //items in the dispenser int cost; //variable to store the cost of an item };

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