venkatarangan / dateofweek

Quick n Dirty implementation of Tomohiko Sakamoto's Algorithm for finding day of the week using C language

Quick n Dirty Implementation of Tomohiko Sakamoto's Algorithm

Overview

This repository contains a simple implementation of Tomohiko Sakamoto's Algorithm for finding the day of the week using the C language. The code was originally written in the early 1990s and was published on GitHub around 2019 as a part of an experiment to explore GitHub's features.

Disclaimer

The original code was not intended to be production-ready. It was created to quickly achieve a task, hence the title.

Recent Updates

While randomly checking my GitHub account on 25 May 2024, I came across this repository and noticed it lacked basic validations. Specifically:

• The code did not handle invalid dates such as days exceeding the number of days in a month or months and years beyond typical limits.
• There was no input validation to ensure the entered values were within the expected range.

To address these issues, I have revised the code with basic input validation and published it in a separate file named validated_dow.c.

Files

• dow.c: The original implementation of the algorithm.
• validated_dow.c: The revised implementation with added input validations.

License

This project is licensed under the MIT License.

Contributions

This project was an experiment and is not maintained. Just take it as it is. Thanks.

Author

Venkatarangan Thirumalai venkatarangan.com