OpenEuphoria

Re: Functions? I'm Lost!!

• Posted by Bernie Ryan <xotron at BUFFNET.NET> May 17, 2000
• 686 views

On Wed, 17 May 2000 17:20:58 -0400, David Roach <roachd_76 at YAHOO.COM> wrote:

>Could someone give me an example of how to use a function.
>I just can't seem to grasp the concept. I know they return
>a value. I just can't find an example where anything for the
>function is used any where else in the program. I'm just lost.
>Thanks for your time.
>
>
>Dave

  Dave:

    Here is a simple example

-- Say I want to create a function that adds 2 numbers

function sum( atom no1, atom no2 )
  return no1 + no2
end function

-- to call the function and print the sum of 2 numbers

  ? sum( 15, 20 )

-- we could just write this

  ? 15+20

-- but the purpose of function ( which can be very complex ) is
-- to be defined only ONCE in your program and be called through out
-- your program to perform the task over and over again and return a
-- VALUE. Remember the big different is that a VALUE is return in a
-- function and NO VALUE is return from a procedure.

  Bernie