Классы, включающие другие классы

#include <iostream>
class Point
{
public:
    void SetX(int x)  {itsX = x;}
    void SetY(int y)  {itsY = y;}
    int GetX()  {return itsX;}
    int GetY()  {return itsY;}
private:
    int itsX;
    int itsY;
};
class Rectangle
{
public:
    Rectangle (int top, int left, int bottom, int right);
    ~Rectangle() {}
    int GetTop()  {return itsTop;}
    int GetLeft()  {return itsLeft;}
    int GetBottom()  {return itsBottom;}
    int GetRight()  {return itsRight;}
    Point GetUpperLeft()   {return itsUpperLeft;}
    Point GetLowerLeft()   { return itsLowerLeft;}   
    Point GetUpperRight()   {return itsUpperRight;}
    Point GetLowerRight()   {return itsLowerRight;}
    void SetUpperLeft (Point Location)  {itsUpperLeft = Location;}
    void SetLowerLeft (Point Location) { itsLowerLeft = Location;}
    void SetUpperRight (Point Location) {itsUpperRight = Location;}
    void SetLowerRight (Point 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:
    Point itsUpperLeft;
    Point itsLowerLeft;
    Point itsUpperRight;
    Point itsLowerRight;
    int itsTop;
    int itsLeft;
    int itsBottom;
    int itsRight;
};
Rectangle::Rectangle(int top, int left, int bottom, int right)
{
    itsTop = top;
    itsLeft = left;
    itsBottom = bottom;
    itsRight = right;
    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 Rectangle::GetArea()
{
    int Widht = itsRight - itsLeft;
    int Height = itsTop - itsBottom;
    return (Widht * Height);
}
int main()
{
    Rectangle MyRectangle (100, 20, 50, 80);
    int Area = MyRectangle.GetArea();
    cout << "Area: " << Area << '\n';
    cout << "Upper Left X Coordinate: ";
    cout << MyRectangle.GetUpperLeft().GetX();
    return 0;
}

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

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