ine_wrapping_stdio_filter(<SPAN CLASS="keyword"><SPAN CLASS="keyword">int</SPAN></SPAN> line_length = <SPAN CLASS='numeric_literal'>80</SPAN>)
        : line_length_(line_length), col_no_(<SPAN CLASS='numeric_literal'>0</SPAN>) 
        { }
<SPAN CLASS="keyword">private</SPAN>:
    <SPAN CLASS="keyword">void</SPAN> do_filter();
    <SPAN CLASS="keyword">void</SPAN> do_close();
    <SPAN CLASS="keyword">void</SPAN> put_char(<SPAN CLASS="keyword"><SPAN CLASS="keyword">int</SPAN></SPAN> c);
    <SPAN CLASS="ke