ORA-06550 PLS-00103

[zx8754]

DECLARE
   wages      NUMBER;

 
Error at line 1
ORA-06550: line 2, column 26:
PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following:
   begin function package pragma procedure subtype type use
   <an identifier> <a double-quoted delimited-identifier> form
   current cursor

 
Can someone explain why I get this error?
 
Thanks