$```$

Rectanglelmp.cpp $>\{\}$ Rectanglelmp

$1$ 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

$\}$

$\}$

$``````$

@$+$ MyRectangleClassProgram.cpp $>\%)$ main$()$

$1//$ 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 $0$;

$\}$

$```$ Your Tasks

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.

Open the MyRectangleClassProgram.cpp$,$ create two Rectangle objects named rectangle$1$ and rectangle$2$ using the default constructor as you saw in MyEmployeeClassProgram.cpp$.$

Set the length of rectangle$1$ to $\backslash (\backslash$mathbf$\{10.0\}\backslash )$ and the width to $\backslash (\backslash$mathbf$\{5.0\}\backslash ).$ Set the length of rectangle$2$ to $\backslash (\backslash$mathbf$\{7.0\}\backslash )$ and the width to $\backslash (\backslash$mathbf$\{3.0\}\backslash ).$ Print the value of rectangle$1\text{'}$s perimeter and area, and then print the value of rectangle$2\text{'}$s perimeter and area. An example of the program is shown below:

Perimeter of rectangle$1$ is $30$

Area of rectangle$1$ is $50$

Perimeter of rectangle$2$ is $20$

Area of rectangle$2$ is $21$