using c$++$ You are working for your state's motor vehicle registry, and it has been

discovered that some people in the driver's license database have multiple

records. The license records are stored in alphabetical order on a set of files,

one file per letter in the alphabet. The first file is licensesa.dat, and the last is

licensesz.dat. For this problem, we'll just focus on getting the program to

work for the licensesa.dat file. Each record consists of a license number $($an

eight$-$digit integer$),$ a name, and an address, all on a single line. For the

purposes of this problem, the name and address can be stored in a single

string because they are not processed separately. The license number and the

corresponding string should be kept together in a struct.

Use the functions of the SortedList class to create a list of numbers that

contains no duplicates. If a duplicate is found in the data file, write the

contents of the original entry $($first one encountered$)$ and the contents of any

duplicates in the file on file duplicates.dat.