C Program to Plot the Gamma Function in the Terminal

In this post I want to talk about a C program I wrote just recently that plots a mathematical function - specifically the gamma function. I think it's worth looking at, because this program demonstrates how to handle the various aspects of graphing and plotting using just ASCII characters in the terminal. The program draws …

C Program to Generate a Blank MS-DOS Floppy Image in Linux

How do you do, fellow old-timers? Today's post is going to be a bit of a crossover, because I'm going to get into some programming stuff, some Linux stuff, and some DOS stuff all at the same time. I'm going to show you a program that I wrote a while back that uses POSIX API …

Generalized Password Cracking, Part 2: Starting with Some Stock Password Attacks

Disclaimer: The present series of posts contains information on how to exploit security vulnerabilities in passwords. It is intended for educational and research purposes only. Neither the password cracking tools described in this series nor any of the exploits developed with these tools are to be used for gaining unauthorized access to accounts or other …

Adding Set Types to the C Programming Language

Well, it's been over a month since my last post, so it's high time I got back into it. I kinda got distracted by other stuff on other sites, most notably DeviantArt and Discord. But I'm back now, and hopefully I'll be able to post more consistently in the future. This is my third article …

Data Science in C: Combining CSV with SQL

In the last episode of Data Science in C I talked about the parser portion of my CSV library, which I implemented using automata. Now that we've parsed the CSV code and converted it into an abstract table structure, it's time to implement some operations on the table data so that we can actually use …

libdfloat: A C Library for Exact Representation of Decimal Floating Point Numbers

Guys, something really awesome just happened!... I actually finished one of my large-scale coding projects! I'd like to introduce you to libdfloat, a C library for representing decimal numbers without any rounding errors. I started this project as an offshoot of my CSV library when I realized that there was a need for a mechanism …

Data Science in C: Programming a Turing Machine to Parse CSV Code

Okay, so maybe I ripped my featured image from the Hack-A-Day site, but that image of a personification of a Turing machine as an intelligent robot was too relevant to the topic of this post to pass up, so sue me. 😛 I want to talk about the first step to building data science or …

Uses for Reverse Engineering: Debugging C Code with a Disassembler

One thing I like about C programming for the DOS prompt is that when there's a run time error, a whole collection of debugging information gets dumped to the console. This can be very useful in diagnosing errors, as opposed to the Unix command line, where all you get is a not-so-descriptive message like "Segmentation …

Unix vs. Windows: How to Check and Convert Between the Two File Formats

Different operating systems use different formats for line breaks, and this can cause confusion and difficulty for a lot of newbies. In this article I will explain the difference between the Unix file format used by Linux and MacOS and the DOS format used by Windows, and I will also show you how to check …

Adding Rational Types to the C Programming Language

One of the main problems with the C programming language as opposed to something like Python is that it doesn't provide any of the convenient amenities that more high-level languages provide in terms of abstract data types. Basically, you have to implement everything yourself. C provides integer types and floating point types, and that's basically …