title: Operator '&' cannot be applied to operands of type 'string' and 'string'
body: <p>I'm trying the following code:</p>
  
  <pre><code>string text = "";
  char c = 'd';
  text += "abc" &amp; c.ToString();
  </code></pre>
  
  <p>..but it returns an error 'Operator '&amp;' cannot...' . It don't works even without ToString(). What's the problem converting char to string?</p>