title: How do I include a quote character in a string?
body: <p>I have to make a web request but its format creates problem for me.<br>
  I require   <code>www.abc.com?userID="YourUserID"</code></p>
  
  <p>I am creating following ...</p>
  
  <p><code>NSURL * url = [NSURL URLWithString:[NSString stringWithFormat:@"http://www.abc.com?userID=%@",myID]];</code></p>
  
  <p>... which will create a url with string <code>www.abc.com?userID=12345</code>.<br>
  But I require <code>www.abc.com?userID="12345"</code></p>
  
  <p>I tried to put following:</p>
  
  <p><code>NSURL * url = [NSURL URLWithString:[NSString stringWithFormat:@"http://www.abc.com?userID="%@"",myID]];</code></p>