Question

1. Write the definition for a generic class called Rectangle that has data members length and width. The class has the following member functions:
   setlength to set the length data member
   setwidth to set the width data member
   perimeter to calculate and return the perimeter of the rectangle
   area to calculate and return the area of the rectangle
   show to return a text to display the length and width of the rectangle
   sameArea that has one parameter of type Rectangle. sameArea returns 1 if the two Rectangles have the same area, and returns 0 if they don't.

Overload the following operators: -

Operators	Description
- (unary)	Length and width will change sign
+	Add bother areas and then find the ratio of the first Rectangle to find the new values of the length and the width
-	Subtract second area from first area and then find the ratio of the first Rectangle to find the new values of the length and the width
*	Multiply first area by second area and then find the ratio of the first Rectangle to find the new values of the length and the width
/	Divide first area by second area and then find the ratio of the first Rectangle to find the new values of the length and the width
<	Compare the areas
>	Compare the areas
<=	Compare the areas
>=	Compare the areas
==	Compare the areas
!=	Compare the areas
=	Assign the length and width to the first Rectangle
+=	Same as + operator and assign the result to the first Rectangle
-=	Same as - operator and assign the result to the first Rectangle
*=	Same as * operator and assign the result to the first Rectangle
/=	Same as / operator and assign the result to the first Rectangle

1. Write the definitions for each of the above member functions.
2. Write main function to create two rectangle pointers. Set the length and width of the first rectangle to 5 and 2. Set the length and width of the second rectangle to 5 and 18.9. Display each rectangle and its area and perimeter.
3. Check whether the two Rectangles have the same area and print a message indicating the result. Set the length and width of the first rectangle to 15 and 6.3. Display each Rectangle and its area and perimeter again. Again, check whether the two Rectangles have the same area and print a message indicating the result.
4. The language is visual studio c++.

Answer 1

#include<iostream>
using namespace std;
class Rectangle{
double length;
double width;
public:
double getlength()
{
return this->length;
}
double getwidth()
{
return this->width;
}
void setwidth(double width)
{
this->width=width;
}
void setlength(double length)
{
this->length=length;
}
double perimeter()
{
return 2*(length+width);
}
double area()
{
return length*width;
}
void show()
{
cout<<"The length of the rectangle: "<<length<<"\n";
cout<<"The width of the rectangle: "<<width<<"\n";
}
int sameArea(Rectangle R)
{
if(this->area()==R.area())
return 1;
else
return 0;
}
Rectangle operator -()
{
Rectangle res;
res.setlength(-this->length);
res.setwidth(-this->width);
return res;
}
Rectangle operator +(Rectangle R)
{
Rectangle res;
double newarea=this->area()+R.area();
double newlen=(newarea*this->length)/this->area();
res.setlength(newlen);
res.setwidth(newarea/newlen);
return res;
}
Rectangle operator -(Rectangle R)
{
Rectangle res;
double newarea=R.area()-this->area();
double newlen=(newarea*this->length)/this->area();
res.setlength(newlen);
res.setwidth(newarea/newlen);
return res;
}
Rectangle operator *(Rectangle R)
{
Rectangle res;
double newarea=this->area()*R.area();
double newlen=(newarea*this->length)/this->area();
res.setlength(newlen);
res.setwidth(newarea/newlen);
return res;
}
Rectangle operator /(Rectangle R)
{
Rectangle res;
double newarea=this->area()/R.area();
double newlen=(newarea*this->length)/this->area();
res.setlength(newlen);
res.setwidth(newarea/newlen);
return res;
}
bool operator <(Rectangle R)
{
if(this->area()<R.area())
return 1;
else
return 0;
}
bool operator >(Rectangle R)
{
if(this->area()>R.area())
return 1;
else
return 0;
}
bool operator >=(Rectangle R)
{
if(this->area()>=R.area())
return 1;
else
return 0;
}
bool operator <=(Rectangle R)
{
if(this->area()<=R.area())
return 1;
else
return 0;
}
bool operator ==(Rectangle R)
{
if(this->area()==R.area())
return 1;
else
return 0;
}
bool operator !=(Rectangle R)
{
if(this->area()!=R.area())
return 1;
else
return 0;
}
Rectangle operator =(Rectangle R)
{
this->setlength(R.length);
this->setwidth(R.width);
}
void operator +=(Rectangle R)
{
double newarea=this->area()+R.area();
double newlen=(newarea*this->length)/this->area();
this->setlength(newlen);
this->setwidth(newarea/newlen);
}
void operator -=(Rectangle R)
{
double newarea=R.area()-this->area();
double newlen=(newarea*this->length)/this->area();
this->setlength(newlen);
this->setwidth(newarea/newlen);
}
void operator *=(Rectangle R)
{
double newarea=this->area()*R.area();
double newlen=(newarea*this->length)/this->area();
this->setlength(newlen);
this->setwidth(newarea/newlen);
}
void operator /=(Rectangle R)
{
double newarea=this->area()/R.area();
double newlen=(newarea*this->length)/this->area();
this->setlength(newlen);
this->setwidth(newarea/newlen);
}
};
int main()
{
Rectangle R1,R2;
R1.setlength(5);
R1.setwidth(2);
R2.setlength(5);
R2.setwidth(18.9);
cout<<"The perimeter and area of first rectangle of length "<<R1.getlength()<<" and width "<<R1.getwidth()<<"is : "<<R1.perimeter()<<" and "<<R1.area()<<" respectively\n";
cout<<"The perimeter and area of second rectangle of length "<<R2.getlength()<<" and width "<<R2.getwidth()<<"is : "<<R2.perimeter()<<" and "<<R2.area()<<" respectively\n";
if(R1.sameArea(R2)==1)
cout<<"First Rectangle and Second Rectangle have same area\n";
else
cout<<"First Rectangle and Second Rectangle have different area\n";
R1.setlength(15);
R1.setwidth(6.3);
cout<<"The perimeter and area of first rectangle of length "<<R1.getlength()<<" and width "<<R1.getwidth()<<"is : "<<R1.perimeter()<<" and "<<R1.area()<<" respectively\n";
cout<<"The perimeter and area of second rectangle of length "<<R2.getlength()<<" and width "<<R2.getwidth()<<"is : "<<R2.perimeter()<<" and "<<R2.area()<<" respectively\n";
if(R1.sameArea(R2)==1)
cout<<"First Rectangle and Second Rectangle have same area\n";
else
cout<<"First Rectangle and Second Rectangle have different area\n";
return 0;
}