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Program 2

// Member definitions for the Point class. Nothing of particular interest. The destructor is revealing.

#include <cmath>
#include <iostream>
#include "point.h"

Point::Point(double x_coord, double y_coord): x(x_coord), y(y_coord){
}

Point::Point(): x(0.0), y(0.0){
}

Point::~Point(){
  std::cout << "Point deleted: " << x << "," << y << std::endl;
}

double Point::getx () const{
  return x;
}

double Point::gety () const{
  return y;
}

void Point::displace(double dx, double dy){
  x += dx; y += dy;
}

double Point::distance_to(const Point& p){
  return sqrt((x - p.x) * (x - p.x) + (y - p.y) * (y - p.y));
}

std::ostream& operator<<(std::ostream& s, const Point& p){
  return s << "(" << p.getx() << "," << p.gety() << ")" ;
}