title: c++ toupper - standard function?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/735204/convert-a-string-in-c-to-upper-case">Convert a String In C++ To Upper Case</a>  </p>
  </blockquote>
  
  
  
  <p>Hi,
  I need a portable function to convert string in c++ to upper case. I'm now using toupper( char); function. Is it a standard function? If not, what it's the correct way to do it across platforms? Btw, is there any web / wiki where I can list all c++ standard functions? Thank you.</p>