title: c program for the reverse the digits
body: <p>I am looking for the <code>C</code> program for reverse the digits like below:</p>
  
  <p>If i enter:</p>
  
  <blockquote>
    <p>123456</p>
  </blockquote>
  
  <p>Then the result would be:</p>
  
  <blockquote>
    <p>654321</p>
  </blockquote>
  
  <p>Please help me.</p>