c++ problem, please answer with text! (not picture)

8.5 Perform the task specified by each of the following statements: a) Write the function header for a function called exchange that takes two pointers to dou c) Write the function header for a function called evaluate that returns an integer and d) Write the function prototype for the function in part (c) ble-precision, floating-point numbers x and y as parameters and does not return a value. the function prototype for the function in part (a). that takes as parameters integer x and a pointer to function poly. Function poly takcs an integer parameter and returns an integer. Write two statements that each initialize character array vowel with the string of vowels, "AEIOU" e)