defined the class boxType by extending the definition of the class rectangleType

ID: 3586500 • Letter: D

Question

defined the class boxType by extending the definition of the class rectangleType. In this exercise, derive the class boxType from the class rectangleType, defined in Exercise 1, add the functions to overload the operators +,–, *, ==, !=, <=, <, >=, >, and pre- and post-increment and decrement operators as members of the class boxType. Also overload the operators << and >>. Overload the relational operators by considering the volume of the boxes. For example, two boxes are the same if they have the same volume.

Write the definitions of the functions of the class boxType as defined above and then write a test program that tests various operations on the class. It is showing that I failed to overload the *, ++, +, --, -, ==, and != operators.

Most of the code is done I am not getting this part

This is not in the correct format because you need to pass three parameters. You need to add #include "rectangleType.h".

boxType::boxType(double side)
{
setDimension(side, side);
}

For example

void boxType::setDimension(double l, double w, double h)
{
rectangleType::setDimension(l, w);

here is my code:

-------------------------boxType.cpp---

#include
#include

#include "boxType.h"

using namespace std;

boxType::boxType(double side)
{
setDimension(side, side);
}

boxType::boxType()
{
length = 0;
width = 0;
}

boxType boxType::operator++()
{
        //increment the length and width
    ++length;
    ++width;

return *this; //return the incremented value of the object
}

boxType boxType::operator++(int u)
{
    boxType temp = *this; //use this pointer to copy
                                 //the value of the object
        //increment the length and width
    length++;
    width++;

return temp; //return the old value of the object
}

boxType boxType::operator--()
{
        //Decrement the length and width
    assert(length != 0 && width != 0);
    --length;
    width = length;

return *this; //return the incremented value of the object
}

boxType boxType::operator--(int u)
{
boxType temp = *this; //use this pointer to copy
//the value of the object

        //Decrement the length and width
    assert(length != 0 && width != 0);
    length--;
    width = length;

return temp; //return the old value of the object
}

boxType boxType::operator+
(const boxType& box) const
{
boxType tempBox;

tempBox.length = length + box.length;
tempBox.width = tempBox.length;

return tempBox;
}

boxType boxType::operator-
(const boxType& box) const
{
boxType tempBox;

assert(length >= box.length &&
width >= box.width);

tempBox.length = length - box.length;
tempBox.width = tempBox.length;

return tempBox;
}

boxType boxType::operator*(const boxType& box) const
{
boxType tempBox;

tempBox.length = length * box.length;
tempBox.width = tempBox.length;

return tempBox;
}

bool boxType::operator==
(const boxType& box) const
{
return (area() == box.area());
}

bool boxType::operator!=
(const boxType& box) const
{
return (area() != box.area());
}

bool boxType::operator<=
(const boxType& box) const
{
return (area() <= box.area());
}

bool boxType::operator<
(const boxType& box) const
{
return (area() < box.area());
}

bool boxType::operator>=
(const boxType& box) const
{
return (area() >= box.area());
}

bool boxType::operator>
(const boxType& box) const
{
return (area() > box.area());
}

ostream& operator<<(ostream& osObject,
const boxType& box)
{
osObject << "Side = " << box.length;

return osObject;
}

istream& operator>>(istream& isObject, boxType& box)
{
    isObject >> box.length;
    box.width = box.length;
    return isObject;
}

------------------------------boxType.h----------

#ifndef H_boxType
#define H_boxType

#include
#include "rectangleType.h"
using namespace std;

class boxType : public rectangleType
{
    //Overload the stream insertion and extraction operators
    friend ostream& operator<<(ostream&, const boxType &);
    friend istream& operator>>(istream&, boxType &);

public:

    //Overload the arithmetic operators
    boxType operator + (const boxType &) const;
    boxType operator - (const boxType &) const;
    boxType operator * (const boxType&) const;

    //Overload the increment and decrement operators
    boxType operator ++ ();          //pre-increment
    boxType operator ++ (int);       //post-increment
    boxType operator -- ();          //pre-decrement
    boxType operator -- (int);       //post-decrement

    //Overload the relational operators
    bool operator == (const boxType&) const;
    bool operator != (const boxType&) const;
    bool operator <= (const boxType&) const;
    bool operator < (const boxType&) const;
    bool operator >= (const boxType&) const;
    bool operator > (const boxType&) const;

    //constructors
    boxType();
    boxType(double side);
};

#endif

-----------------------rectangleType.cpp-------------------

#ifndef H_boxType
#define H_boxType

#include
#include "rectangleType.h"
using namespace std;

public:

    //Overload the arithmetic operators
    boxType operator + (const boxType &) const;
    boxType operator - (const boxType &) const;
    boxType operator * (const boxType&) const;

    //constructors
    boxType();
    boxType(double side);
};

#endif

-----------------------------rectangleType.h-------------------

#ifndef H_rectangleType

#define H_rectangleType

#include

using namespace std;

class rectangleType

{

public:

//Overload the stream insertion and extraction operators

friend ostream& operator<<(ostream&, const rectangleType& rectangle);

friend istream& operator>>(istream&, rectangleType& rectangle);

//Overload the arithmetic operators

rectangleType operator+(const rectangleType&);

rectangleType operator-(const rectangleType&);

rectangleType operator*(const rectangleType&);

//Overload the increment and decrement operators

rectangleType operator++();

//pre-increment

rectangleType operator++(int);

//post-increment

rectangleType operator--();

//pre-decrement

rectangleType operator--( int);

//post-decrement

//Overload the relational operators

bool operator==(

const rectangleType&);

bool operator!=(

const rectangleType&);

bool operator<=(

const rectangleType&);

bool operator<(

const rectangleType&);

bool operator>=(

const rectangleType&);

bool operator>(

const rectangleType&);

void setDimension(double l, double w);

double getLength() const;

double getWidth() const;

double area() const;

double perimeter() const;

rectangleType();

rectangleType(double l, double w);

protected:

double length;

double width;

};

#endif

-----------------------------------main.cpp-----------------------------

#include
#include "rectangleType.h"
#include "boxType.h"

using namespace std;

int main()
{
    rectangleType rectangle1(10, 5);
    rectangleType rectangle2(8, 7);
    rectangleType rectangle3;
    rectangleType rectangle4;

cout << "rectangle1: " << rectangle1 << endl;
cout << "rectangle2: " << rectangle2 << endl;

rectangle3 = rectangle1 + rectangle2;

cout << "rectangle3: " << rectangle3 << endl;

rectangle4 = rectangle1 * rectangle2;

cout << "rectangle4: " << rectangle4 << endl;

    if (rectangle1 > rectangle2)
        cout << "Area of rectangle1 is greater than the area "
             << "of rectangle2 ." << endl;
    else
        cout << "Area of rectangle1 is less than or equal to the area "
             << "of rectangle2 ." << endl;

rectangle1++;

    cout << "After increment the length and width of "
         << "rectangle1 by one unit, rectangle1: "
         << rectangle1 << endl;

rectangle4 = ++rectangle3;

cout << "New dimension of rectangle3: " << rectangle3 << endl;
cout << "New dimension of rectangle4: " << rectangle4 << endl;

    boxType box1(10);
    boxType box2(8);
    boxType box3;
    boxType box4;

cout << "box1: " << box1 << endl;
cout << "box2: " << box2 << endl;

box3 = box1 + box2;

cout << "box3: " << box3 << endl;

box4 = box1 * box2;

cout << "box4: " << box4 << endl;

    if (box1 > box2)
        cout << "Area of box1 is greater than the area "
             << "of box2 ." << endl;
    else
        cout << "Area of box1 is less than or equal to the area "
             << "of box2 ." << endl;

box1++;

    cout << "After increment the side of "
         << "box1 by one unit, box1: "
         << box1 << endl;

box4 = ++box3;

cout << "New dimension of box3: " << box3 << endl;
cout << "New dimension of box4: " << box4 << endl;

return 0;
}

Explanation / Answer

#ifndef H_rectangleType

#define H_rectangleType

class rectangleType

{

public:

void setDimension(double l, double w);

double getLength() const;

double getWidth() const;

double area() const;

double perimeter() const;

void print() const;

rectangleType operator+(const rectangleType&) const;

rectangleType operator*(const rectangleType&) const;

bool operator==(const rectangleType&) const;

bool operator!=(const rectangleType&) const;

rectangleType operator-(const rectangleType&) const;

rectangleType operator/(const rectangleType&) const;

bool operator<(const rectangleType&) const;

bool operator>(const rectangleType&) const;

bool operator<=(const rectangleType&) const;

bool operator>=(const rectangleType&) const;

rectangleType operator++(rectangleType& rectangle, int z);

rectangleType operator--(rectangleType& rectangle, int z);

rectangleType();

rectangleType(double l, double w);

private:

double length;

double width;

};

#endif

#include <iostream>

#include "rectangleType.h"

using namespace std;

void rectangleType::setDimension(double l, double w)

{

if (l >= 0)

length = l;

else

length = 0;

if (w >= 0)

width = w;

else

width = 0;

}

double rectangleType::getLength() const

{

return length;

}

double rectangleType::getWidth()const

{

return width;

}

double rectangleType::area() const

{

return length * width;

}

double rectangleType::perimeter() const

{

return 2 * (length + width);

}

void rectangleType::print() const

{

cout << "Length = " << length

<< "; Width = " << width;

}

rectangleType::rectangleType(double l, double w)

{

setDimension(l, w);

}

rectangleType::rectangleType()

{

length = 0;

width = 0;

}

rectangleType rectangleType::operator+

(const rectangleType& rectangle) const

{

rectangleType tempRect;

tempRect.length = length + rectangle.length;

tempRect.width = width + rectangle.width;

return tempRect;

}

rectangleType rectangleType::operator*

(const rectangleType& rectangle) const

{

rectangleType tempRect;

tempRect.length = length * rectangle.length;

tempRect.width = width * rectangle.width;

return tempRect;

}

rectangleType rectangleType::operator-

(const rectangleType& rectangle) const

{

rectangleType tempRect;

tempRect.length = length - rectangle.length;

tempRect.width = width - rectangle.width;

return tempRect;

}

rectangleType rectangleType::operator/

(const rectangleType& rectangle) const

{

rectangleType tempRect;

tempRect.length = length / rectangle.length;

tempRect.width = width / rectangle.width;

return tempRect;

}

rectangleType operator++(rectangleType& rectangle, int z)

{

(rectangle.length)++;

(rectangle.width)++;

return rectangle;

}

rectangleType rectangleType::operator++(rectangleType& rectangle, int)

{

rectangleType temp = *this;

(rectangle.length)++;

(rectangle.width)++;

return temp;

}

rectangleType operator--(rectangleType rectangle, int z)

{

(rectangle.length)--;

(rectangle.width)--;

return rectangle;

}

rectangleType rectangleType::operator--(rectangleType& rectangle, int)

{

rectangleType temp = *this;

(rectangle.length)--;

(rectangle.width)--;

return temp;

}

bool rectangleType::operator==

(const rectangleType& rectangle) const

{

return (length == rectangle.length &&

width == rectangle.width);

}

bool rectangleType::operator!=

(const rectangleType& rectangle) const

{

return (length != rectangle.length ||

width != rectangle.width);

}

bool rectangleType::operator<

(const rectangleType& rectangle) const

{

return (length < rectangle.length ||

width < rectangle.width);

}

bool rectangleType::operator>

(const rectangleType& rectangle) const

{

return (length > rectangle.length ||

width > rectangle.width);

}

bool rectangleType::operator<=

(const rectangleType& rectangle) const

{

return (length <= rectangle.length ||

width <= rectangle.width);

}

bool rectangleType::operator>=

(const rectangleType& rectangle) const

{

return (length >= rectangle.length ||

width >= rectangle.width);

}

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