title: how to overcome CString error
body: <p>how to overcome this error</p>
  
  <pre><code>  func selectFunc(){
      var selectQuery="select * from EmployeInfo"
      var cSql:CString = selectQuery.bridgeToObjectiveC().cStringUsingEncoding(NSUTF8StringEncoding)
      var result:CInt=0
  
      var stmt:COpaquePointer = nil
      result = sqlite3_prepare_v2(appDelegate.database, cSql, -1, &amp;stmt, nil);
      if result != SQLITE_OK
  </code></pre>
  
  <p>error occurred use of undeclared CString.how to overcome this error </p>