input: Write a function to compute the sum of two input variables and store the result in a third variable. Then print the result.
  
  assert compute_sum(5, 8)==13
  assert compute_sum(7, 12)==19
  assert compute_sum(0, 0)==0
  assert compute_sum(-3, 3)==0
  assert compute_sum(10, -5)==5
output: def compute_sum(a, b):
      result = a + b
      print(result)