Mega Code Archive
Use class as a member field
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#include <iostream>
class Point // holds x,y coordinates
{
// no constructor, use default
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;
};// end of Point class declaration
class Rectangle
{
public:
Rectangle (int top, int left, int bottom, int right);
~Rectangle () {}
int GetTop() const { return itsTop; }
int GetLeft() const { return itsLeft; }
int GetBottom() const { return itsBottom; }
int GetRight() const { return itsRight; }
Point GetUpperLeft() const { return itsUpperLeft; }
Point GetLowerLeft() const { return itsLowerLeft; }
Point GetUpperRight() const { return itsUpperRight; }
Point GetLowerRight() const { return itsLowerRight; }
void SetUpperLeft(Point Location);
void SetLowerLeft(Point Location);
void SetUpperRight(Point Location);
void SetLowerRight(Point Location);
void SetTop(int top);
void SetLeft (int left);
void SetBottom (int bottom);
void SetRight (int right);
int GetArea() const;
private:
Point itsUpperLeft;
Point itsUpperRight;
Point itsLowerLeft;
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);
}
void Rectangle::SetUpperLeft(Point Location)
{
itsUpperLeft = Location;
itsUpperRight.SetY(Location.GetY());
itsLowerLeft.SetX(Location.GetX());
itsTop = Location.GetY();
itsLeft = Location.GetX();
}
void Rectangle::SetLowerLeft(Point Location)
{
itsLowerLeft = Location;
itsLowerRight.SetY(Location.GetY());
itsUpperLeft.SetX(Location.GetX());
itsBottom = Location.GetY();
itsLeft = Location.GetX();
}
void Rectangle::SetLowerRight(Point Location)
{
itsLowerRight = Location;
itsLowerLeft.SetY(Location.GetY());
itsUpperRight.SetX(Location.GetX());
itsBottom = Location.GetY();
itsRight = Location.GetX();
}
void Rectangle::SetUpperRight(Point Location)
{
itsUpperRight = Location;
itsUpperLeft.SetY(Location.GetY());
itsLowerRight.SetX(Location.GetX());
itsTop = Location.GetY();
itsRight = Location.GetX();
}
void Rectangle::SetTop(int top)
{
itsTop = top;
itsUpperLeft.SetY(top);
itsUpperRight.SetY(top);
}
void Rectangle::SetLeft(int left)
{
itsLeft = left;
itsUpperLeft.SetX(left);
itsLowerLeft.SetX(left);
}
void Rectangle::SetBottom(int bottom)
{
itsBottom = bottom;
itsLowerLeft.SetY(bottom);
itsLowerRight.SetY(bottom);
}
void Rectangle::SetRight(int right)
{
itsRight = right;
itsUpperRight.SetX(right);
itsLowerRight.SetX(right);
}
int Rectangle::GetArea() const
{
int Width = itsRight-itsLeft;
int Height = itsTop - itsBottom;
return (Width * Height);
}
int main()
{
Rectangle MyRectangle (100, 20, 50, 80 );
int Area = MyRectangle.GetArea();
std::cout << "Area: " << Area << "\n";
std::cout << MyRectangle.GetUpperLeft().GetX();
return 0;
}
Area: 3000
20
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