Maintenance07-01 // Marian Basting takes in small sewing jobs.
// She has two files sorted by date.
// (The date is composed of two numbers -- month and year.)
// One file holds new sewing projects
// (such as "wedding dress")
// and the other contains repair jobs
// (such as "replace jacket zipper").
// Each file contains the month, day, client name, phone number,
// job description, and price.
// Currently, this program merges the files to produce
// a report that lists all of Marian's jobs for the year
// in date order.
// Modify the program to also display her total earnings
// at the end of each month as well as at the end of the year.