input: Write a function to compute the sum of all values in a given dictionary where keys are strings and values are integers. The function should iterate through the values of the dictionary, summing them up, and return the total sum.
  assert compute_dict_sum({"a": 5, "b": 10, "c": 15})==30
  assert compute_dict_sum({"x": 2, "y": 3})==5
  assert compute_dict_sum({})==0
  assert compute_dict_sum({"one": 1, "two": 2, "three": 3})==6
  assert compute_dict_sum({"red": 100, "blue": 200, "green": 300})==600
output: def compute_dict_sum(d):
      return sum(d.values())