The C++ Program Structure

int Location::GetY(void) {

return Y;

};

// member functions for the Point class: These assume

// the main program has initialized the graphics system

Point::Point(int InitX, int InitY) : Location(InitX,InitY) {

Visible = false; // make invisible by default

};

void Point::Show(void) {

Visible = true;

putpixel(X, Y, getcolor()); // uses default color

};