HW Assignment #$1$

The XYZ Hardware Company has hired you to program its Accounts Receivable department. $($A$/$R are accounts that owe money to

the company for purchases from the company$)$

There are two types of input data

A master file in ascending order by customer number, containing a $4-$digit customer number, a $20-$character customer name

and a balance due.

A transaction file containing records of each transaction by each customer. This file is in ascending order by customer

number. There should be more than one transaction record per master record. Each related group of data in a file is called a

record. A record should be stored in a structure.

There is also a $3^{rd}$ input file which just contains a list of numbers from $0$ to $50.($details below$)$

For the first $2$ input files. each record starts with a character, $O$ for order or $P$ for payment. Each also contains the four$-$digit customer

number, a four$-$digit transaction number, plus up to three more values:

If the code is $"$O$",$ the record contains the item ordered $(20$ characters$),$ the quantity ordered $($an integer$)$ plus the cost of the item.

$($You must multiply to get the total cost$).$ If the code is $"$P$",$ the record contains the amount of the payment

From the $3^{rd}$ file each time you are finished processing a customer you will read the next number in the file and that will be the

discount they will get when making the current payment. For example, if the payment is $$500$ and the next number read in from the $3^{rd}$

file is a $20$ for this customer, they should get an additional $20\%$ off the balance, so a payment of $$500$ will give them an additional

$$100$ off their balance for a total credit of $$600.$

You are to read in records one at a time from the two files and use the transaction file records to update the master file balance.

Process all transaction records for each master record before going on to the next master record. If the transaction record contains an

$"$O$"$ in column $1$ calculate the order amount and add it to the balance due. If the record contains a $"$P$"$ in Column $1$ subtract the

payment from the balance due. Keep a running total of the $\frac{A}{R}$ Balance of ABC Company $($that is the sum of the balances due for

each customer$).$

Your program should

Check for errors such as duplicate master records or records in the transaction file with a customer number that does not appear in the

master file.

After processing a master record and all its transaction records prepare an invoice for each customer which lists on top the customer

name and number, a line depicting the previous balance $($the original balance in the master record before any transactions$)$ followed by

the transactions and the a balance due.

It should look like this

Customer Name

Customer Number

Previous Balance $xxxxxxxxxx$.$xx

transaction number

transaction number

transaction number

transaction number

$xxxxxxxxx$.$xx

Don't forget payments reduce balances orders increase balances. You are to create your own data using at least $7$ to $10$ customers with

an average of $4$ to $5$ transactions each. Remember to create a $3^{rd}$ file with at least as many numbers as the number of balance sheets

you are processing.