#include <iostream>
using namespace std;

inline void clear_screen()
{
   cout << "\x1b[2J";
}
inline void set_cur_pos( int r, int c )
{
   cout << "\x1b[" << r << ";" << c << "H";
}

inline char getch()
{
   char ch;
   cin.get(ch);
   return ch;
}

/**************** class figure ****************************/
class figure{
protected:
  int row, col;
public:
  figure( int x, int y );
  virtual      ~figure(){}
  virtual void    draw() = 0;
  virtual void   erase() = 0;
  void move( int x, int y );
};

/**************** class rect ****************************/
class rect : public figure{  int height, width;
public:
  rect( int c, int r, int w, int h );
  void draw();
  void erase();
};

/**************** class text ****************************/
class text : public figure{  char* txt;
public:
  text( int c, int r, char* t );
  ~text(){ delete txt; };
  void draw();
  void erase();
};