input: Write a function to calculate the cube of an integer input from the user and print the result. The function should take an integer as input, compute its cube, and print the result.
  assert calculate_cube(3)==None
  assert calculate_cube(4)==None
  assert calculate_cube(5)==None
  assert calculate_cube(6)==None
  assert calculate_cube(7)==None
output: def calculate_cube(n):
      print(n ** 3)