Goal: Processing data read from a file

Assignment: You have stored your revenue for the previous year in a file named administration.txt$.$ Each line in this file contains the amount of money you have earned per month $($this can also be negative$).$

You need to know the total amount of money earned that year.

Write a code snippet that reads every entry in administration.txt and writes the total amount to total.txt$.$

Note: Assume the fstream and iostream header files have been included.