// Sample construction of points and rectangles

#include <iostream>
#include "rect.h"
// In this variant of the program, point.h is included via rect.h 

int main(){
  using namespace std;

  Point p1{1, 2}, p2{5, -3};                  // Two points on the stack. 

                                              // Four rectangles on the stack:
  Rectangle r1{},                             // Use default constructor
            r2{1, 2, 5, -3},                  // Rectangle from x and y coordinates
            r3{p1, p2},                       // Rectangle from two corner points
            r4{Point{1, 2}, Point{5, -3}};    // Same

  // use of points and rectangles
  // ...
}