How to Execute stored procedure from SQL Plus?

Question

I have a stored procedure in oracle and want to test it from SQLPlus.

If I use

execute  my_stored_proc (-1,2,0.01) 

I get this erro

Answer 1

You have two options, a PL/SQL block or SQL*Plus bind variables:

var z number

execute  my_stored_proc (-1,2,0.01,:z)

print z