var
decimal: word;
bin_oct: byte;
function binary_octal(decimal:word;bin_oct:byte):string;
begin
if (bin_oct <> 2) and (bin_oct <> 8) then
write('Error')
else
while decimal > 0 do begin
binary_octal := chr(ord('0') + (decimal mod bin_oct)) + binary_octal;
decimal := decimal div bin_oct
end;
end;
begin
write('Decimal: ');
readln(decimal);
write('Binary or octal (2,8): ');
readln(bin_oct);
writeln(binary_octal(decimal,bin_oct));
readln
end.Алгоритмов куча, не ленимся искать...