Example Code for Leak 5

Example Code for Leak #5

 #include <iostream.h>  class Point {  int x, y;  char* color; public:  Point(int, int,char*);  // Note the commented-out copy constructor.  //Point(const Point&);  ~ Point();  Point duplicate(Point);  void print(); }; Point::Point(int new_x, int new_y, char* col) {   x = new_x; y = new_y;   color = new char[strlen(col)+1];   strcpy(color, col); } // This is an example copy constructor for the // Point class. Note that it is commented out // of the application. /* Point::Point(const Point& rhs) {  x = rhs.x; y = rhs.y;  color = new char[strlen(rhs.color)+1];  strcpy(copy, rhs.color); } */ Point::~Point() }  delete color; } // This function takes a Point object as an // argument ''by value. '' That will cause an // implicit call to the copy constructor. // In addition, the C++ statement // ''  return(*this);  '' will cause an implicit call to // the copy constructor because // the function returns a Point // object by value.  Point  Point::duplicate  (Point rhs)  {  x = rhs.x;  y = rhs.y;  return(*this); } void Point::print() {  cout << ''I'm a point at ('';  <<x<<'' , '' <<y<< '') \n'';  cout << ''My color is''; <<color<< ''. \n\n''; } main() {  Point p1(10, 10, ''Blue'');  Point p2 (15, 18, ''Green''); // The following declaration causes an // implicit call to the copy constructor;  Point p3 = p2;  // Another way of writing the above  // declaration is: //  Point p3(p2);  p1.print();  p2.print();  p3.print(); // The function ''duplicate'' takes a Point // object by value and returns a local copy by // value. The statement causes two implicit // calls to the copy constructor.  p1.duplicate(p2);  p1.print();  p2.print();  p3.print(); }