Credit Card Sales Reporting Program

A COBOL program that reads credit card transaction data and generates detailed sales reports.

Requirements

• GnuCOBOL (OpenCOBOL) - [Installation guide](https://gnucobol.sourceforge.io/FAQ/ Installation.html)

Quick Start

# Compile
cobc -x -free CCRPT01.CBL -o CCRPT01

# Run
./CCRPT01

Files

File	Description
CCRPT01.CBL	Main COBOL program
SALES.DAT	Sample input data file
BUILD.RUN	Build instructions

Output Reports

File	Description
REPORT.TXT	Detailed transaction listing
SUMMARY.RPT	Summary totals by transaction type
BYTYPE.RPT	Analysis by transaction type and amount brackets

Input Data Format (SALES.DAT)

Position	Field	Format
1-10	Transaction ID	X(10)
11-20	Date	9(8) YYYYMMDD
21-35	Card Type	X(15)
36-45	Trans Type	X(10)
46-54	Amount	9(7)V99
55-64	Merchant ID	X(10)
65-72	Terminal ID	X(8)

Transaction Types

• SALE - Purchase transaction
• REFUND - Refund/return
• AUTH - Authorization only
• VOID - Voided transaction

Card Types

• VISA
• MASTERCARD
• AMEX
• DISCOVER