in c++ please

Write a program that converts a time in 12-hour format to 24-hour format. The program will prompt the user to enter a time in HH:MM:SS AM/PM form. (The time must be entered exactly in this format all on one line. It will then convert the time to 24 hour form. You may use a string type to read in the entire time at once including the space or you may choose to use separate variables for the hours, minutes, seconds and AM/PM. Run your program and show the output for each of the five examples below. Examples: Input (12HR) 5:30:00 PM 6:45:50 AM 12:32:30 AM 12:15:18 PM 1:02:22 PM Output(24hr) 17:30:00 06:45:50 00:32:30 12:15:18 13:02:22