Objective
This project was a simple exercise in using control structures, performing calculations, and file (dataset) I/O with the REXX programming language on a
z/OS system. It taught me a lot about how different some languages are in regard to fil I/O and just how useful REXX can be.
Source Code
Click here to see the finished source code!
Sample Outputs
Here is a couple of examples for both types of program output
Requirements
For the project itself, the program prompts the TSO user for a dataset name and data type (html or text) that will be allocated using their username as the
high level qualifier (HLQ). It will then attempt to allocate the dataset, asking the user to overwrite if it already exists, and ask for the following loan
information when successful:
- Principal
- Annual Interest Rate
- Loan term in years
- Additional payments for each month in addition to the minimum
Afterwards, after doing a bunch of fun math, the program will populate a table with all sorts of information for each month of the loan like:
- Month and year
- Beginning Principal
- Total Payment
- Payment amount from extra payments
- Payment amount for interest
- Payment amount for principal
- Ending Principal
If the user decided to make extra payments, the output will also tell them how much money they've saved compared to paying only the minimum each month.
Finally, the user will be informed that the amortization was successful, and that's the end! The image below shows what the program looks like running in TSO.
