Notice: Undefined index: imprimir in D:\xampp\htdocs\soft\Castel\fisica\imprimir2.php on line 6

Warning: include(../conexion.php): failed to open stream: No such file or directory in D:\xampp\htdocs\soft\Castel\fisica\imprimir2.php on line 8

Warning: include(): Failed opening '../conexion.php' for inclusion (include_path='.;D:\xampp\php\PEAR') in D:\xampp\htdocs\soft\Castel\fisica\imprimir2.php on line 8

Notice: Undefined variable: cn in D:\xampp\htdocs\soft\Castel\fisica\imprimir2.php on line 9

Warning: mysql_query() expects parameter 2 to be resource, null given in D:\xampp\htdocs\soft\Castel\fisica\imprimir2.php on line 9

Warning: mysql_fetch_array() expects parameter 1 to be resource, null given in D:\xampp\htdocs\soft\Castel\fisica\imprimir2.php on line 21