title: Standard library `FILE` type
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/6949192/why-is-file-all-caps-as-in-file">Why is FILE all-caps as in FILE*?</a>  </p>
  </blockquote>
  
  
  
  <p>Why is the standard library <code>FILE</code> type written uppercase ?<br>
  Is it because of its opaque nature ?</p>
  
  <p>Thank you.</p>