Вот для pascal.
var
x: array [1..100] of Integer;
i,n: Integer;
s: Integer;
begin
writeln('Skolko elementov');
read(n);
s := 0;
for i := 1 to n do begin
Write('x[', i, '] = ');
Readln(x[i]);
if (x[i] > 0) and (x[i] < 10) then s := s + x[i];
end;
Writeln(s);
end.