1) This code calculates the result of raising an integer 'a' to the power of 'b' (a^b) using a custom function 'f'. It handles the special case where 'b' is 0 by directly returning 1. 2) Hints: - The function 'f' uses a loop to multiply 'a' by itself 'b' times. Think about how this relates to exponentiation. - Notice how the main function checks if 'b' is 0 before calling 'f' - why is this special case needed?