summation in dc

[Mike Maxwell]

[I tried to send this msg to comp.gnu.utils this morning, but it never 
showed up.  I'm trying this group now, through a different 
newsserver--apologies if this results in duplicates.]

A frequent task I have is to sum a series of numbers.  The 'dc' utility 
is a nice tool, but I don't see any obvious way of using it to sum a 
list of arbitrary length.  Well, I guess I could use wc -l to find out 
how many numbers I was going to sum, then keep decrementing that, but 
that seems clumsy...

I can read the numbers into dc, then keep hitting the "+" key until I 
get a "stack empty" error, then do "p".  But that also seems clumsy, and 
besides, I want this to run automatically, without keystrokes, or me 
waiting to see the error msg.

Maybe there's a way of doing this with macros in dc?  Or in bc?  Or in 
some other tool?  If the latter, it needs to be s.t. readily available, 
as I want it to work in several different environments (CygWin, Linux, 
FreeBSD).

    Mike Maxwell