Object-Oriented Programming - Practice

#include <iostream>
#include <string>
using namespace std;

class Rectangle {
    double width, height;
public:
    Rectangle(double w, double h) : width(w), height(h) {}
    double area() const { return width * height; }
    double perimeter() const { return 2 * (width + height); }
    void display() const {
        cout << width << "x" << height
             << " Area: " << area()
             << " Perimeter: " << perimeter() << endl;
    }
};

int main() {
    Rectangle r1(5, 3), r2(10, 7);
    r1.display();
    r2.display();
    return 0;
}