// Buffer.cpp #include "Buffer"h" using namespace std; void Buffer::display) const int ix-stop-line-= ix-top-line-+ window-height-; for (int i - ix top_line_; iIn" cout > window_height_; cin.get I cout #include class Buffer public: void display() const; const std::string & file name( const return file name void move_to_next_page(); void move_to_previous_page); bool open (const std::string & file_name); void set-window-height (int h) { window-height-= h; } private: std: :vector<:string> _lines_; int ix top_line-0; std::string file_name_; int window_height_; 3: inline void Buffer::move_to_next_page() ix-top-line-+-window-height- if (ix top 1ine >- v lines .size)) ix top_linewindow_height_; inline void Buffer::move_to_previous_page() ix top linewindow_height_; if (ix_top_line_ iostream #include "Buffer"h" const char clear_command"cls"; // for Windows //const char clear command"clear"; // for Linux and possibly Mac's class Fileviewer public: void run (); private: void display(); void execute_command (char command, bool & done); Buffer buffer_; int window_height_; std::string error_message_; 3: #end if // Buffer.cpp #include "Buffer"h" using namespace std; void Buffer::display) const int ix-stop-line-= ix-top-line-+ window-height-; for (int i - ix top_line_; iIn" cout > window_height_; cin.get I cout #include class Buffer public: void display() const; const std::string & file name( const return file name void move_to_next_page(); void move_to_previous_page); bool open (const std::string & file_name); void set-window-height (int h) { window-height-= h; } private: std: :vector<:string> _lines_; int ix top_line-0; std::string file_name_; int window_height_; 3: inline void Buffer::move_to_next_page() ix-top-line-+-window-height- if (ix top 1ine >- v lines .size)) ix top_linewindow_height_; inline void Buffer::move_to_previous_page() ix top linewindow_height_; if (ix_top_line_ iostream #include "Buffer"h" const char clear_command"cls"; // for Windows //const char clear command"clear"; // for Linux and possibly Mac's class Fileviewer public: void run (); private: void display(); void execute_command (char command, bool & done); Buffer buffer_; int window_height_; std::string error_message_; 3: #end if