class view_t
{
public:
   int    load_view(void);
   void   print_view(void);
private:
   int    win_x_size;
   int    win_y_size;
   double world_x_size;
   double world_y_size;
   double viewpt[3];
}  view_t;

int view_t::load_view(void)
{

}

int main(){}