Rectangle Class in C++

 Posted by Samath   2327 January 01, 2015

Design a class named Rectangle to represent a rectangle.  The class contains:

- Two double data fields named width and height that specify the width and height of the rectangle.  The    default values are 1 for both width and height.

- A no-arg constructor that creates a rectangle with default values.

- A constructor that creates a rectangle with the specified width and height.

- A method named getArea() that returns the area of this rectangle.

- A method named getPerimeter() that returns the perimeter.

Solution:

```#include <iostream>

using namespace std;

class Rectangle
{
public:
Rectangle();
double getArea();
double getPerimeter();
double getWidth();
double getHeight();
void setWidth(double w);
void setHeight(double h);
Rectangle (double w, double h);

private:
double width;
double height;

};

double Rectangle::getPerimeter()
{
return 2 * (width + height);
}

double Rectangle::getArea()
{
return width * height;
}

double Rectangle::getWidth()
{
return width;
}

double Rectangle::getHeight()
{
return height;
}

void Rectangle::setWidth(double w)
{
width = w;
}

void Rectangle::setHeight(double h)
{
height = h;
}

Rectangle::Rectangle (double w, double h)
{
width = w;
height = h;
}

Rectangle::Rectangle()
{
width = 1;
height = 1;
}

int main(int argc, char *argv[])
{
Rectangle myRectangle1(40, 20);
Rectangle myRectangle2(20,10);

cout<<"Rectangle 1 Perimeter: "<<myRectangle1.getPerimeter();
cout<<"\nRectangle 1 Area: "<<myRectangle1.getArea();

cout<<"\n\nRectangle 2 Perimeter: "<<myRectangle2.getPerimeter();
cout<<"\nRectangle 2 Area: "<<myRectangle2.getArea();

return 0;
}```