Re: Only one compilation unit.

["Marc A. Criley" <mcqada@earthlink.net>]

McDoobie wrote:
> 
> Alright, I'm writing a small program using two procedures.
> 
> Now I'm coding both procedures within the same .adb file. When I go to
> compile the program I get an error that says "end of file expected, can
> only have one compilation unit."
> 
> Now, that only happens when writing programs with more than one procedure.
> 
> Do I have to put each different procedure in a seperate text file? Or is
> it necessary to write .ads which describe each and every procedure?
> Any help would be appreciated.
> 

You already got the basic answer to your question in the other postings,
but let me just add some info about a common Ada programming idiom.

If you're writing what might be considered a single procedure, but you
don't like doing lots of procedure nesting, you can create a package to
contain the procedures.  (This approach uses packages simply as an
encapsulation mechanism.)  At the one extreme the package could then
provide just a single visible procedure, for example:

   procedure Run;

which is then called by your main program.  On the other hand, if the
package makes visible a few key procedures, then your main program can
implement the high-level logic, orchestrating the calls to this support
package.

Marc A. Criley
Senior Staff Engineer
Quadrus Corporation
www.quadruscorp.com