Back to notes -- Keyboard shortcut: 'u'  previous -- Keyboard shortcut: 'p'  next -- Keyboard shortcut: 'n'  Slide program -- Keyboard shortcut: 't'    The corresponding cc file - not particularly relevant.Lecture 3 - slide 15 : 36
Program 2
#include <cmath>
#include <cstddef>
#include <iostream>
#include "point-lineseg.h"

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

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

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

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

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

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


LineSegment::LineSegment(size_t s){
    points = new Point[number_of_points = s];
    std::cout << "LineSegment Constructor" << std::endl;
  }

LineSegment::~LineSegment(){
    delete[]points;
    std::cout << "LineSegment Destructor" << std::flush << std::endl;
  }


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