title: Format row if one or more cells contain a specified string
body: <p>In excel 2007, I would like to apply a formatting rule throughout my entire workbook, which will format a row if and only if that row contains one or more cells with a question mark. I'm trying this formula:</p>
  
  <pre><code>=IF(countif(c2:l2, "?")&gt;0)
  </code></pre>
  
  <p>Where row 1 contains a header, and the values that I would like to check should range from columns C to L. Excel says that there is an error however, can anyone see what that error is?</p>