Так как язык не указан, приведу пример на SWI-Prolog.
Код:
read_int(Int) :- read(Int), integer(Int).split_int_by_numbers(0, []) :- !.split_int_by_numbers(N, [Number|Ints]) :- Number is mod(N, 10), RestN is div(N, 10), split_int_by_numbers(RestN, Ints).test_to_div(_, []).test_to_div(N, [Number|Ints]) :- mod(N, Number) =:= 0, test_to_div(N, Ints). test(Int) :- split_int_by_numbers(Int, Numbers), test_to_div(Int, Numbers), write(Int), write(" - Yes!"), nl.test(Int) :- write(Int), write(" - No!"), nl.?- read_int(Int), test(Int).
var a,c,b,num: integer;
begin
write('введите число: ');
readln(num);
a:= round(num div 100);
c:=round(num mod 10);
b:=round(((num mod 100)-c)/10);
writeln('сотни: ',a);
writeln('десятки: ',b);
writeln('единицы: ',c);
end.