function sumArray(array) {
  const ourArray = [1, 4, 0, 9, -3];
  let sum = 0;

  for (let i = 0; i < ourArray.length; i += 1) {
    sum += ourArray[i];
  }

  console.log(sum);
  return sum;
}

sumArray([1, 4, 0, 9, -3]);