Can someone help me with this quesion and write a little comment so i know what the code is doing.

5. (Data processing) a. Create a text file named employee.dat, eruse the file of the same name provided on-this book's Web-site, containing the following data Anthon Burrows Fain Jann Smith 10031 10067 10083 10095 10105 17.82 12.14 14.79 12.57 15.50 12/18/2010 06/09/2011 05/18/2010 09/28/2010 12/20/2011 b. Write a C++ program to read the employee.dat file created in Exercise 5a and produce a duplicate copy of the file named employee.bak. c. Modify the program written in Exercise 5b to accept the names of the original and duplicate files as user input