title: Compare C-string of types char* and wchar_t*
body: <p>I have a <code>key</code> like:</p>
  
  <pre><code>wchar_t key[] = L"764frtfg88fgt320nolmo098vfr"; 
  </code></pre>
  
  <p>and a <code>char* row[i]</code> returned by a query from a Database.</p>
  
  <p>I'd like to compare my <code>Key</code> with <code>row[i]</code>. I tried with</p>
  
  <pre><code>wcscmp (key,row[i]) != 0)
  </code></pre>
  
  <p>but it gives me an error. Any suggestions ?</p>