Strange Variable behavior

[KSB]

I'm trying to learn C++ with Dev-C++ 4.9.8.7 and the book i'm using gave me an
exercise to write a program to compute the area of a shape. What i got is
this:

include <iostream>

include <stdlib.h>

using namespace std;

class cPoint
{
public:
void SetX(int x) {itsX = x;}
void SetY(int y) {itsY = y;}
int GetX() const {return itsX;}
int GetY() const {return itsY;}

private:
int itsX;
int itsY;
};

class cRectangle
{

public:
// Public Functions
cRectangle(int top, int left, int bottom, int right);
~cRectangle();

int GetTop() const {return itsTop;}
int GetLeft() const {return itsLeft;}
int GetBottom() const {return itsBottom;}
int GetRight() const {return itsRight;}

cPoint GetUpperLeft() const {return itsUpperLeft;}
cPoint GetLowerLeft() const {return itsLowerLeft;}
cPoint GetUpperRight() const {return itsUpperRight;}
cPoint GetLowerRight() const {return itsLowerRight;}

void SetUpperLeft(cPoint Location) {itsUpperLeft=Location;}
void SetLowerLeft(cPoint Location) {itsLowerLeft=Location;}
void SetUpperRight(cPoint Location) {itsUpperRight=Location;}
void SetLowerRight(cPoint Location) {itsLowerRight=Location;}

void SetTop(int top) {itsTop=top;}
void SetLeft(int left) {itsLeft=left;}
void SetBottom(int bottom) {itsBottom=bottom;}
void SetRight(int right) {itsRight=right;}

int GetArea();

private:
// Private Members
cPoint itsUpperLeft;
cPoint itsUpperRight;
cPoint itsLowerLeft;
cPoint itsLowerRight;

int itsTop;
int itsLeft;
int itsBottom;
int itsRight;
};

int main(int argc, char *argv)
{
// Rectangle init
cRectangle MyRectangle(100,20,50,80);

int Area;
Area = MyRectangle.GetArea();

cout<<"\nArea = "<< Area;
cout<<"\nUpperLeftX = " <<
MyRectangle.GetUpperLeft().GetX();
cout<<"\nWhy is this???";
system("PAUSE");
return 0;
}

cRectangle::cRectangle(int top, int left, int bottom, int right)
{

int itsTop=top;
int itsLeft=left;
int itsBottom=bottom;
int itsRight=right;
cout<<"In Constructor:\nitsLeft;"
<<itsLeft<<"_"<<&itsLeft;
cout<<"\nitsRight;"<<itsRight
<<"___"<<&itsRight;

itsUpperLeft.SetX(left);
itsUpperLeft.SetY(top);

itsUpperRight.SetX(right);
itsUpperRight.SetY(top);

itsLowerLeft.SetX(left);
itsLowerLeft.SetY(bottom);

itsLowerRight.SetX(right);
itsLowerRight.SetY(bottom);
}

int cRectangle::GetArea()
{
cout<<"\nIn GetArea()\nitsLeft;"
<<itsLeft<<""<<&itsLeft;
cout<<"\nitsRight;"<<itsRight<<"__"&l
t;<&itsRight;
int Widht= itsRight-itsLeft;
int Height= itsTop-itsBottom;
return (Widht*Height);
}

cRectangle::~cRectangle()
{
}

Now, when i run the program i don't get what i expect to get. I get something
like -541617856 as the area for that rectangle which should be 3000.

It tried just everything to find out why that happens. As you see i checked
the Adress of the member variables and they change. I am not sure why. It's
not a cruicial problem (at least for now) but i just want to know why that
happens. Maybe my compiler is messed up with some strange settings i don't
know of which cause more and more problem while i advance in programming or
whatever.

[KSB]

I found out myself. I declared 4 new local variables in the constructor and
the output was random...

omg... i feel stupid :P

[laxman varada]

hi,

sorry i have no idea about of this, i can not reply
i also need suggestion pl any help with a nice suggestion

thanks in advance

regards,
phe9oxis,
http://www.guidebuddha.com