ss="lineno">   82</span>&#160;        this-&gt;x+=other.x;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;        this-&gt;y+=other.y;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    };</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#1