[oracle] executing a function in sql plus

I created a function in oracle that inserts records in specific tables and return an output according to what occurs within the function. e.g (ins_rec return number)

How do I call this function and see its output in sql plus

declare
  x number;
begin
  x := myfunc(myargs);
end;

Alternatively:

select myfunc(myargs) from dual;

One option would be:

SET SERVEROUTPUT ON

EXEC DBMS_OUTPUT.PUT_LINE(your_fn_name(your_fn_arguments));

As another answer already said, call select myfunc(:y) from dual; , but you might find declaring and setting a variable in sqlplus a little tricky:

sql> var y number

sql> begin
  2  select 7 into :y from dual;
  3  end;
  4  /

PL/SQL procedure successfully completed.

sql> print :y

         Y
----------
         7

sql> select myfunc(:y) from dual;