#709. Sum of even numbers

when green flag clicked
set [i v] to (0)
set [s v] to (0)
repeat (20)
change [i v] by (1)
if <((i) mod (2)) = (0)> then
change [s v] by (i)
end
end

# When the green flag is clicked
i = 0
s = 0
for _ in range(20):
    i += 1
    if (i % 2) == 0:
        s += i

// Scratch's mod gives a positive remainder even for negative numbers
function mod(a, b) {
  return ((a % b) + b) % b;
}

let i = 0, s = 0;

// When the green flag is clicked
i = 0;
s = 0;
for (let j = 0; j < 20; j++) {
  i += 1;
  if ((mod(i, 2)) === 0) {
    s += i;
  }
}

💡 Not sure? Build it in Scratch and try it out.