Changes

* Use Safegaurd for header files with the format of _OOP_FILENAME_H_'''_XIII_FILENAME_H_'''* Data members in any classes start with underscore(_), for example '''_data'''* Use '''Capital letter ''' for the second (third, forth, ...) word of variables with compound words

* Use 3 '''2 spaces ''' for indentation* Use only '''SPACE BAR ''' for indentation (do not use Tab)* Use curly-braces for all kinds of '''loops, if statementstatements, switch, etc.''' For example, if (condition){ code; } // end if* '''Comment ''' shortly and properly, specially at the end of long scopes* You can use extra spaces to align statements or blank line between parts of the code that you are going to put comment