title: Compiler gives - warning C4013: 'getche' undefined; assuming extern returning int
body: <p>I'm using Visual studio for my code development and when I used the function </p>
  
  <blockquote>
    <p>getche()</p>
  </blockquote>
  
  <p>The compiler gave me this warning </p>
  
  <pre><code> warning C4013: 'getche' undefined; assuming extern returning int
  </code></pre>
  
  <p>But the getche() function is working just as expected , why compiler is showing such a warning , and How can I eliminate this warning?</p>