input: Write a function to compute the sum of two input variables x and y, then store the result in a third variable z and print the result. The function should take two parameters x and y, and should return the result.
  assert compute_sum_and_store(5, 8)==13
  assert compute_sum_and_store(3, 7)==10
  assert compute_sum_and_store(0, 0)==0
  assert compute_sum_and_store(-5, 5)==0
  assert compute_sum_and_store(10, -3)==7
output: def compute_sum_and_store(x, y):
      z = x + y
      print(z)
      return z