text: #ifndef SCR_H_INCLUDED
  #define SCR_H_INCLUDED
  
  // Funciones necesarias para hacer ---------------------------- INTERFAZ
  extern const bool NoPrompt;
  extern void putLine(const std::string &, bool = true);
  extern void getLine(std::string &, bool = true);
  
  class Scr {
  public:
      static void print(const std::string &txt)
          { putLine( txt, false ); }
  
      static void println(const std::string &txt = "")
          { putLine( txt ); }
  
      static void input(std::string &x)
          { getLine( x ); }
  };
  
  #endif // SCR_H_INCLUDED
  