input: Write a function to calculate the cube of a given integer input from the user. Print the result as "The cube of the number is: " followed by the cube of the number.
  
  assert calc_cube(3)==27
  assert calc_cube(5)==125
  assert calc_cube(-2)==-8
  assert calc_cube(0)==0
  assert calc_cube(1)==1
output: def calc_cube(n):
      return n ** 3