Hackerrank Rectangle Area Solution

Create two classes:

Rectangle
The Rectangle class should have two data fields-width and height of int types. The class should have display() method, to print the width and height of the rectangle separated by space.

RectangleArea
The RectangleArea class is derived from Rectangle class, i.e., it is the sub-class of Rectangle class. The class should have 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  of the rectangle.

Input Format

The first and only line of input contains two space separated integers denoting the width and height of the rectangle.

Constraints

Output Format

The output should consist of exactly two lines:
In the first line, print the width and height of the rectangle separated by space.
In the second line, print the area of the rectangle.

Sample Input

10 5

Sample Output

10 5
50

Explanation

As,  and , so

Solution in cpp#

Approach 1.

class Rectangle{    
    public:
    int width, height;
    void Display(){
        cout<<width<<" "<<height<<endl;
    }
};
class RectangleArea: public Rectangle{
    public:
    void Input(){
        cin>>width>>height;
    }
    void Display(){
        cout<<width*height;
    }
};

Approach 2.

class Rectangle { 
 public: 
    
    int width,length;
    void Display()
    {
        cout<<width<<" "<<length<<"\n";
    } 

};
class RectangleArea: public Rectangle {
    public: void Input() { 
        cin>>width>>length; 
    } 
    void Display() { 
        int c; 
        c=width*length; 
        cout << c;
    }
};

Approach 3.

class Rectangle{
    public:
        int width,height;
        void Display(){
            printf("%d %d\n",width,height);
        }
};
class RectangleArea : public Rectangle{
    public:
        void Input(){
            scanf("%d %d",&width,&height);
        }
        void Display(){
            printf("%d\n",width*height);
        } 
};