title: What is Difference Between Below Two Line Of Codes
body: <p>i am not able to understand why we have to add <code>"a"+randomtext.Next(0,26)</code> for text</p>
  
  <pre><code>buffer[i] = (char)('a' + random.Next(0, 26));
  </code></pre>
  
  <p>versus</p>
  
  <pre><code>buffer[i] = (char)( random.Next(0, 26));
  </code></pre>