title: Using Unicode in C++ source code
body: <p>What is the standard encoding of C++ source code? Does the C++ standard even say something about this? Can I write C++ source in Unicode?</p>
  
  <p>For example, can I use non-ASCII characters such as Chinese characters in comments? If so, is full Unicode allowed or just a subset of Unicode? (e.g., that 16-bit first page or whatever it's called.)</p>
  
  <p>Furthermore, can I use Unicode for strings? For example:</p>
  
  <pre><code>Wstring str=L"Strange chars: âÂ Čšđ ě €€";
  </code></pre>