input: Write a function that takes an integer input from the user and prints its cube.
  assert cube()=="The cube of the number is: 27"
  assert cube()=="The cube of the number is: 64"
  assert cube()=="The cube of the number is: 125"
  assert cube()=="The cube of the number is: 1"
  assert cube()=="The cube of the number is: 0"
output: def cube():
      number = int(input("Enter an integer: "))
      return f"The cube of the number is: {number**3}"