HackerRank Rectangle Area solution in c++ programming YASH PAL, 31 July 202422 August 2024 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. 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. 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; } void read_input() { cin >> width >> height; } }; int main() { /* * Declare a RectangleArea object */ RectangleArea r_area; /* * Read the width and height */ r_area.read_input(); /* * 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 %dn", w, h); } }; struct RectangleArea : Rectangle { void read_input() { scanf("%d%d", &w, &h); } void display() { printf("%dn", w * h); } }; int main() { /* * Declare a RectangleArea object */ RectangleArea r_area; /* * Read the width and height */ r_area.read_input(); /* * Print the width and height */ r_area.Rectangle::display(); /* * Print the area */ r_area.display(); return 0; } coding problems cpp hackerrank solutions