In this lab, you create a programmer$-$defined class and then use it in a C$++$ program. The program should create two Rectangle objects and find their area and perimeter. Use the Circle class that you worked with in Exercise $10-1$ as a guide.

Instructions

Open the class file RectangleImp.cpp$.$

In the Rectangle class, create two private attributes named length and width. Both length and width should be data type double.

Task $1$: Write public set and get methods to set and get the values for length.

Task $2$: Write public set and get methods to set and get the values for width.

Task $3$: Write a public calculateArea$()$ method and a public calculatePerimeter$()$ method to calculate and return the area of the rectangle and the perimeter of the rectangle.

$//$ This program uses the programmer$-$defined Rectangle class.

#include "RectangleImp.cpp$"$

#include

using namespace std;

using namespace RectangleImp;

int main$()$

$\{$

$$

$//$ Create Rectangle objects here

$$

$//$ Set the lengths and widths here

$$

$//$ Print the areas and perimeters here

$$

$$return $0$;

$\}$

Namespace RectangleImp $\{$

$//$ Rectangle

$$class Rectangle

$\{$

$$ public:

$//$ Declare public methods here

$$ private:

$//$ Create length and width here

$\}$;

$$

$$void Rectangle::setLength$($double len$)$

$\{$

$//$ Write setLength here

$\}$

$$

$$void Rectangle::setWidth$($double wid$)$

$\{$

$//$ write setWidth here

$\}$

$$

$$double Rectangle::getLength$()$

$\{$

$//$ write getLength here

$\}$

$$

$$double Rectangle::getWidth$()$

$\{$

$//$ write getWidth here

$\}$

$$

$$double Rectangle::calculateArea$()$

$\{$

$//$ write calculateArea here

$\}$

$$

$$double Rectangle::calculatePerimeter$()$

$\{$

$//$ write calculatePerimeter here

$\}$

$\}$