title: Add an int to a char in c# to move its ascii value up (just like in c++)
body: <p>In c++ this code would work:</p>
  
  <pre><code>char c='a'; 
  int r=2;
  c+=r;
  </code></pre>
  
  <p>This would do the same as <code>c='c'</code>.
  How can I do the same in c#?</p>