# HackerRank Rectangle Area solution in c++ programming

In this HackerRank Rectangle Area problem in the c++ programming language, you are required to compute the area of a rectangle using classes. Create two classes one is Rectangle and the second is RectangleArea.

1. The Rectangle class should have two data fields-width and height of int types. The class should have a display() method, to print the width and height of the rectangle separated by space.
2. The RectangleArea class is derived from the Rectangle class, i.e., it is the sub-class of the Rectangle class. The class should have the read_input() method, to read the values of width and height of the rectangle. The RectangleArea class should also overload the display() method to print the area (width X height) of the rectangle.

## HackerRank Rectangle Area problem solution in c++ programming.

```#include <iostream>

using namespace std;
/*
* Create classes Rectangle and RectangleArea
*/
class Rectangle {
public:
virtual void display() const {
cout << width << ' ' << height << endl;
}

protected:
int width;
int height;
};

class RectangleArea : public Rectangle {
public:
void display() const override {
cout << (width * height) << endl;
}

cin >> width >> height;
}
};

int main()
{
/*
* Declare a RectangleArea object
*/
RectangleArea r_area;

/*
* Read the width and height
*/

/*
* Print the width and height
*/
r_area.Rectangle::display();

/*
* Print the area
*/
r_area.display();

return 0;
}```

## Second solution

```#include <iostream>

using namespace std;
/*
* Create classes Rectangle and RectangleArea
*/

struct Rectangle {
int w, h;
void display() {
printf("%d %d\n", w, h);
}
};
struct RectangleArea : Rectangle {
scanf("%d%d", &w, &h);
}
void display() {
printf("%d\n", w * h);
}
};

int main()
{
/*
* Declare a RectangleArea object
*/
RectangleArea r_area;

/*
* Read the width and height
*/

/*
* Print the width and height
*/
r_area.Rectangle::display();

/*
* Print the area
*/
r_area.display();

return 0;
}```