title: Can't use getchar_unlocked with code::blocks + MingW on windows 7 64 bit
body: <p>I can run my code on online compilers like ideone.com just fine. But MinGW gives the error -</p>
  
  <pre><code>error: 'getchar_unlocked' was not declared in this scope
  </code></pre>
  
  <p>Is there a workaround for this?
  My OS is Windows 7 Ultimate 64bit.</p>