title: What is the difference between f and F
body: <p>In the following code, the const are defined using two different ways.</p>
  
  <pre><code>     const float KS = 0.001F;
       const float WW = 0.001f;
  </code></pre>
  
  <p>Is there any difference between F and f?</p>
  
  <p><strong>Revision 1:</strong>
  If both are same then why both cases are allowed ?</p>