2008-09-28 |  RatheeshTR  | Viewed: 135  |    0

#include <iostream.h>


class myException
{
public:
char * errorMsg() { return "Oops."; }
};

class Point
{
public:
Point (int x, int y):myX(x), myY(y) { cout << "Point constructor called"<< endl;}
Point (const Point & rhs):
myX(rhs.myX),
myY(rhs.myY){ cout << "Point copy constructor called" << endl;}
~Point(){ cout << "Point destructor called" << endl;}
int GetX() const { return myX; }
void SetX(int x) { myX = x; }
int GetY() const { return myY; }
void SetY(int y) { myY = y; }
private:
int myX;
int myY; 
};

class Rectangle
{
public:
Rectangle(Point upperLeft, Point lowerRight):
myUpperLeft ( new Point(upperLeft)),
myLowerRight(new Point(lowerRight))
{}

Rectangle(Point * pUpperLeft, Point * pLowerRight):
myUpperLeft ( new Point(*pUpperLeft)),
myLowerRight(new Point(*pLowerRight))
{}


Rectangle(int upperLeftX, int upperLeftY, int lowerRightX, int lowerRightY):
myUpperLeft(new Point(upperLeftX,upperLeftY)),
myLowerRight(new Point(lowerRightX,lowerRightY))
{}

Rectangle( const Rectangle & rhs ):
myUpperLeft(new Point(*myUpperLeft)),
myLowerRight(new Point(*myLowerRight))
{}

~Rectangle(){ cout << "In Rectangle's destructor" << endl; delete myUpperLeft; delete myLowerRight; }


int GetWidth() { return myLowerRight->GetX() - myUpperLeft->GetX(); }
int GetHeight() { return myLowerRight->GetY() - myUpperLeft->GetY(); }

void DangerousMethod() { throw myException(); }

 private:
Point * myUpperLeft;
Point * myLowerRight;
};


int main()
{

try
{
cout << "Begin round 1..." << endl;
Point * pUL = new Point(0,0);
Point * pLR = new Point(20,30);
Rectangle myRectangle(pUL, pLR);

int w = myRectangle.GetWidth();
int h = myRectangle.GetHeight();
cout << "the Rectangle is " << w << " by " << h << endl;
delete pUL;
delete pLR;
}
catch ( myException & e )
{

cout << "caught exception: " << e.errorMsg() << "\n\n" << endl;
}


try
{
cout << "Begin round 2..." << endl;
Point * pUL = new Point(0,0);
Point * pLR = new Point(20,30);
Rectangle myRectangle(pUL, pLR);

int w = myRectangle.GetWidth();
int h = myRectangle.GetHeight();
cout << "the Rectangle is " << w << " by " << h << endl;
myRectangle.DangerousMethod();
delete pUL;
delete pLR;
}
catch ( myException & e )
{

cout << "caught exception: " << e.errorMsg() << "\n\n" << endl;
}


return 0;
}