- Solution

#include <iostream>
class Widget{
  public:
    Widget(): width(640), height(480), frame(false), visible(true) {}
    Widget(int w): width(w), height(getHeight(w)), frame(false), visible(true){}
    Widget(int w, int h): width(w), height(h), frame(false), visible(true){}
    void show(){ std::cout << std::boolalpha << width << "x" << height
                           << ", frame: " << frame << ", visible: " << visible
                           << std::endl;
     }
  private:
    int getHeight(int w){ return w*3/4; }
    int width;
    int height;
    bool frame;
    bool visible;
};
int main(){
  std::cout << std::endl;
  Widget wVGA;
  Widget wSVGA(800);
  Widget wHD(1280, 720);
  wVGA.show();
  wSVGA.show();
  wHD.show();
  std::cout << std::endl;
}