Sum of Digits.

[Dieter]

(03-25-2016 08:26 PM)ggauny@live.fr Wrote:  May be, if register X is greather then 9, XEQ the routine again ?

#009
X<Y ?
XEQ 'SD'
END

Am-I right ?

"SD" also works for x≤9.
But your proposed code does not work as it returns SD(9) = 9 for any x>9, and 9 for the rest. In other words, it will always return ...9.

OK, you could even do it in two lines:
XEQ SD
XEQ SD

But that's not the real solution as it requires an external program with a significant number of steps.
Actually the solution is much, much simpler, and of course it does not require calling an external program. ;-)

Dieter