TextStream implemented but the print() function isnt used correctly

object/stringbuffer.h

@@ -43,7 +43,7 @@ class Stringbuffer {
  protected:
   /*! \brief Constructor; Marks the buffer as empty
    */
-  Stringbuffer() {}
+  Stringbuffer() : pos(0){}
 
   /*! \brief Inserts a character into the buffer.
    *
@@ -63,7 +63,9 @@ class Stringbuffer {
    *  flush() is required to reset the position pos.
    */
   virtual void flush() = 0;
-
+  
+  unsigned pos;
+  char buffer[80+1]; 
  public:
   /*! \brief Destructor (nothing to do here)
    */