title: How to prepend a word with a letter if the first letter of that word is upper-case?
body: <p>If i have for example this <code>String</code>:</p>
  
  <pre><code>String paragraphWord = "This is A String of WoRDs";
  </code></pre>
  
  <p>This is my desired result:</p>
  
  <p><strong>k</strong>This is <strong>k</strong>A <strong>K</strong>String of <strong>k</strong>WorDS</p>
  
  <p>So i want to add <strong>k</strong> before every word which first letter is upper-case. How to do that?</p>
  
  <p>This is what i've tried without success:</p>
  
  <pre><code>String paragraphWord = "This is A String of WoRDs";
  String replacewords = string.Concat(paragraphWord.Select(c =&gt; char.IsUpper(c) ? "k" + c.ToString() : c.ToString())).TrimStart(); 
  </code></pre>
  
  <p>The (incorrect) result is: <code>kThis is kA kString of kWokRkDs</code></p>