Complete Display 11.5. Create a complete application. Here is the Display: //Pro

Question

Complete Display 11.5. Create a complete application. Here is the Display:

//Program to demonstrate the class Money. (This is an improved version of

// the class Money that we gave in Display 11.3 and rewrote in Display 11.4.)

#include

<iostream>

#include

<cstdlib>

#include

<cctype>

using

namespace std;

//Class for amounts of money in U.S. currency.

class

Money

{

public

:

friend Money operator +(const Money& amount1, const Money& amount2);

//Precondition: amount1 and amount2 have been given values.

//Returns the sum of the values of amount1 and amount2.

friend bool operator ==(const Money& amount1, const Money& amount2);

//Precondition: amount1 and amount2 have been given values.

//Returns true if amount1 and amount2 have the same value;

//otherwise, return false.

Money(

long dollars, int cents);

//Initializes the object so its value represents an amount with the

//dollars and cents given by the arguments. If the amount is negative,

//then both dollars and cents must be negative

Money(

long dollars);

//Initializes the object so its value represents $dollars.00.

Money ( ) ;

double get_value( ) const;

//Initializes the object so its value represents $0.00

void input(istream& ins);

//Precondition: If ins is a file input stream, then ins has already been

//connected to a file. An amount of money, including a dollar sign, has been

//entered in the input stream ins. Notation for negative amounts is -$100.00.

//Postcondition: The value of the calling object has been set to

//the amount of money read from the input stream ins.

void output(ostream& outs) const;

//Precondition: If outs is a file output stream, then outs has already been

//connect to a file.

//Postcondition: A dollar sign and the amount of money recorded

//in the calling object have been sent to the output stream outs.

private

:

long all_cents;

};

int

main( )

{

Money cost(1, 50), tax(0, 15), total;

total = cost + tax;

cout<<

"cost = ";

cost.output(cout);

cout<< endl;

cout<<

"tax = ";

tax.output(cout);

cout<<endl;

cout<<

"total bill = " ;

total.output(cout);

cout << endl;

if (cost == tax)

cout<<

"Move to another state. ";

else cout<< "Things seem normal. ";

return 0;

}

Money

operator +(const Money& amount1, const Money& amount2)

{

Money temp;

temp.all_cents == amount1.all_cents + amount2.all_cents;

return temp;

}

bool

operator ==(const Money& amount1, const Money& amount2)

{

return(amount1.all_cents == amount2.all_cents);

%u3000

}

%u3000

%u3000

Explanation / Answer

#include<iostream>
#include<cstdlib>
#include<cctype>
using namespace std;
class Money
{
public:
friend Money operator +(const Money& amount1, const Money& amount2);
//Precondition: amount1 and amount2 have been given values.
//Returns the sum of the values of amount1 and amount2.
friend bool operator ==(const Money& amount1, const Money& amount2);
//Precondition: amount1 and amount2 have been given values.
//Returns true if amount1 and amount2 have the same value;
//otherwise, return false.
Money(long dollars, int cents)
{
all_cents = 100*dollars + cents;
}
//Initializes the object so its value represents an amount with the
//dollars and cents given by the arguments. If the amount is negative,
//then both dollars and cents must be negative
Money(long dollars)
{
all_cents = 100*dollars;
}
//Initializes the object so its value represents $dollars.00.
Money ( )
{
all_cents = 0;
}
double get_value( ) const
{
return all_cents;
}
//Initializes the object so its value represents $0.00
void input(istream& ins);
//Precondition: If ins is a file input stream, then ins has already been
//connected to a file. An amount of money, including a dollar sign, has been
//entered in the input stream ins. Notation for negative amounts is -$100.00.
//Postcondition: The value of the calling object has been set to
//the amount of money read from the input stream ins.
void output(ostream& outs) const
{
outs << " $ " << (all_cents/100) << " . " << ( all_cents - (all_cents/100)*100) << endl;
}
//Precondition: If outs is a file output stream, then outs has already been
//connect to a file.
//Postcondition: A dollar sign and the amount of money recorded
//in the calling object have been sent to the output stream outs.
private:
long all_cents;
};

int main( )
{
Money cost(1, 50), tax(0, 15), total;
total = cost + tax;
cout<<"cost = ";
cost.output(cout);
cout<< endl;
cout<<"tax = ";
tax.output(cout);
cout<<endl;
cout<<"total bill = " ;
total.output(cout);
cout << endl;
if (cost == tax)
cout<<"Move to another state. ";
else cout<< "Things seem normal. ";
return 0;
}

Money operator+(const Money& amount1, const Money& amount2)
{
Money temp;
temp.all_cents = amount1.all_cents + amount2.all_cents;
return temp;
}
bool operator ==(const Money& amount1, const Money& amount2)
{
return(amount1.all_cents == amount2.all_cents);
}

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