Executing a Stored Procedure with OUT Variables

Question

When you execute a stored proc withi OUT variables, do you have to add in the "Declare" section and "Begin/End" sections? Or can you just use "EXECUTE <stored proc>"??

Answer 1

When you execute a stored proc withi OUT variables, do you have to add in the "Declare" section and "Begin/End" sections?
Or can you just use "EXECUTE <stored proc>"?? You mean this?:
michaels>  create or replace procedure p (o out varchar2)
as
begin
   o := 'Some out variable';
end p;
Procedure created.
michaels>  var o varchar2(50)
michaels>  exec p(:o)
PL/SQL procedure successfully completed.
michaels>  print o
o                                                
Some out variable