title: understanding the code
body: <p>Can some one explain me this code
  there is a class <code>StringStream</code> . What i don't get is <code>StringStream&amp; write(char*)</code>.
  and if in cpp file there is </p>
  
  <pre><code>StringStream&amp; StringStream::write(char* text)
  {
     //what values can i return??
     //can i return address of character text is currently pointing to?
  }
  </code></pre>