Chapter 8, Problem 3E

Write a function e that takes as its arguments two t structures and returns a t structure that represents the elapsed time (in hours, minutes, and seconds) between the two times. So the call

e

where t represents 3:45:15 and t represents 9:44:03, should return a t structure that represents 5 hours, 58 minutes, and 48 seconds. Be careful with times that cross midnight.