input: Write a function to calculate the square root of a given positive number and print the result. If the input number is not positive, print an error message instead.
  def square_root_calculator(n):
      if n > 0:
          square_root = math.sqrt(n)
          print(f'Square root of {n} is {square_root}')
      else:
          print("Error: Input number must be positive.")
  
  assert square_root_calculator(100)=="Square root of 100 is 10.0"
  assert square_root_calculator(16)=="Square root of 16 is 4.0"
  assert square_root_calculator(-5)=="Error: Input number must be positive."
  assert square_root_calculator(0)=="Error: Input number must be positive."
output: def square_root_calculator(n):
      if n > 0:
          square_root = math.sqrt(n)
          print(f'Square root of {n} is {square_root}')
      else:
          print("Error: Input number must be positive.")