input: Write a function to calculate the cube of a given integer. The function should prompt the user for an integer input, compute its cube, and print the result.
  def cube_of_number():
      number = int(input("Please enter a number: "))
      cube = number**3
      print("The cube of the number is: " + str(cube))
  
  assert cube_of_number()==None, "Please enter a number: 2\nThe cube of the number is: 8"
  assert cube_of_number()==None, "Please enter a number: 3\nThe cube of the number is: 27"
  assert cube_of_number()==None, "Please enter a number: -1\nThe cube of the number is: -1"
  assert cube_of_number()==None, "Please enter a number: 0\nThe cube of the number is: 0"
output: def cube_of_number():
      number = int(input("Please enter a number: "))
      cube = number**3
      print("The cube of the number is: " + str(cube))