Hacker News with Generative AI: C Programming

Writing a Self-Mutating x86_64 C Program (2013) (ephemeral.cx)
“Why would you ever want to write a program that changes its code while it’s running? That’s a horrible idea!”
C Programming, Programming, Self-Modifying Code
118 points by kepler471 33 days ago | 38 comments
Right-Truncatable Prime Counter (github.com/EbodShojaei)
This C program efficiently calculates the number of right-truncatable primes for a given number of digits.
Programming, Mathematics, C Programming, Prime Numbers
9 points by rainmans 34 days ago | 5 comments
Vibe-coded a professional C99 compiler with a broken hand (then threw it away) (reddit.com)
Programming, C Programming, Personal Projects, Humor
17 points by jgarzik 41 days ago | 2 comments
C is not a low-level language (2018) (queue.acm.org)
In the wake of the recent Meltdown and Spectre vulnerabilities, it's worth spending some time looking at root causes. Both of these vulnerabilities involved processors speculatively executing instructions past some kind of access check and allowing the attacker to observe the results via a side channel. The features that led to these vulnerabilities, along with several others, were added to let C programmers continue to believe they were programming in a low-level language, when this hasn't been the case for decades.
Computer Security, Programming Languages, C Programming
15 points by pdubroy 45 days ago | 14 comments
I built a native Windows Todo app in pure C (278 KB, no frameworks) (github.com/Efeckc17)
A modern, native Windows Todo application built with C and Win32 API. This project demonstrates advanced Windows GUI programming and system integration capabilities.
Windows Development, C Programming, GUI Programming, Open Source, Productivity
386 points by toxi360 47 days ago | 237 comments
Show HN: LoopMix128 – Fast C PRNG (.46ns), 2^128 Period, BigCrush/PractRand Pass (github.com/danielcota)
This repository contains LoopMix128, an extremely fast pseudo-random number generator (PRNG) with a guaranteed period of 2^128, proven injectivity, and clean passes in both BigCrush and PractRand (32TB). It is designed for non-cryptographic applications where speed and statistical quality are important.
C Programming, Performance Optimization, Software, Github
76 points by the_othernet 48 days ago | 34 comments
Fui: C library for interacting with the framebuffer in a tty context (github.com/martinfama)
fui, standing for framebuffer user interface, is a C library for interacting with the framebuffer in a tty context.
C Programming, Linux, Terminal, User Interfaces, Graphics
8 points by Bhulapi 53 days ago | 1 comments
Memory leak proof every C program (tedunangst.com)
Memory leaks have plagued C programs for as long as the language has existed.
Programming, C Programming, Memory Management
8 points by iio7 58 days ago | 3 comments
GNU C Language Introduction and Reference Manual (gnu.org)
This manual explains the C language for use with the GNU Compiler Collection (GCC) on the GNU/Linux system and other systems.
C Programming, GNU, Programming Languages, Linux
10 points by teleforce 60 days ago | 0 comments
Open-source interactive C tutorial in the browser (learn-c.org)
Welcome to the learn-c.org free interactive C tutorial.
Programming, C Programming, Education, Tutorials
256 points by Buttons840 62 days ago | 49 comments
C has its limits. If you know where to look (subethasoftware.com)
Thank you, Bing Copilot (ChatGPT), for giving me another “thing I just learned” to blog about.
C Programming, Software Development, Programming Languages
10 points by aquastorm 74 days ago | 2 comments
Show HN: Bptree – A B+ tree implementation in C (github.com/habedi)
Bptree is a lightweight single-header B+ tree implementation written in C.
Data Structures, C Programming, Open Source, Software, GitHub
3 points by habedi0 74 days ago | 0 comments
Embedding Awk in a C Program (neacsu.net)
This article introduces an embedded AWK interpreter that can be called from a C/C++ program.
C Programming, Awk, Programming Languages, Software Development
13 points by shakna 75 days ago | 1 comments
A port of Mbed-TLS for the Classic Macintosh OS 7/8/9 (github.com/bbenchoff)
This is a C89/C90 port of MbedTLS for Mac System 7/8/9. It works, and compiles under Metrowerks Codewarrior Pro 4. Here's the proof:
Macintosh OS, C Programming, Security, Open Source, Legacy Software
86 points by DanAtC 78 days ago | 14 comments
Algorithms Design (In C) (ime.usp.br)
The 20th century was the century of the equation; the 21st century is the century of the algorithm.
Algorithms, Programming, C Programming, Computer Science
8 points by ibobev 88 days ago | 0 comments
A diagram of C23 basic types (wordpress.com)
This week on the C committee mailing list we had a discussion about how C’s types are organized into different categories. At the end I came up with a diagram with that organization. It basically translates the section “6.2.5 Types” of the C23 standard into a graph of inclusions.
C Programming, Programming Languages, Data Structures, Diagrams, Standards
6 points by ingve 90 days ago | 0 comments
A decompilation and port of Sonic Advance 2-a GameBoy Advance game written in C (github.com/SAT-R)
⚠️ This project is not completed and still under active development
Game Development, Programming, Video Games, Retro Gaming, C Programming
182 points by bane 92 days ago | 39 comments
Beej's Guide to C Programming [pdf] (beej.us)
Programming, C Programming, Books
113 points by krykp 94 days ago | 18 comments
Writing Programs with Ncurses (invisible-island.net)
This document is an introduction to programming with curses. It is not an exhaustive reference for the curses Application Programming Interface (API); that role is filled by the curses manual pages. Rather, it is intended to help C programmers ease into using the package.
Programming, C Programming, Libraries
128 points by begoon 96 days ago | 52 comments
Bootstrap C projects without the pain (github.com/claeusdev)
A minimal C project generator written in Rust.
C Programming, Rust, Project Generators, Developer Tools
13 points by claeusdev 97 days ago | 0 comments
Strncpy? just say no (2011) (liw.fi)
This is a rant. I’ve made it in various forms in various places over the years, and I think it’s time to put it somewhere so I can point people at it, and stop repeating myself.
Programming, Security, C Programming
3 points by Tomte 104 days ago | 0 comments
Writing a Simple Garbage Collector in C (maplant.com)
People seem to think that writing a garbage collector is really hard, a deep magic understood by a few great sages and Hans Boehm (et al). Well it’s not. In fact, it’s rather straight forward. I claim that the hardest part in writing a GC is writing the memory allocator, which is as hard to write as it is to look up the malloc example in K&R.
Programming, C Programming, Garbage Collection
3 points by stevenmh 105 days ago | 0 comments
Image Processing in C (2000) [pdf] (ed.ac.uk)
Image Processing, C Programming, Computer Science, Technical Documents, 1990s
139 points by nill0 105 days ago | 26 comments
Show HN: Krep a High-Performance String Search Utility Written in C (davidesantangelo.github.io)
A blazingly fast string search utility for performance-critical applications
Software, C Programming, String Search, Performance Optimization
173 points by daviducolo 108 days ago | 74 comments
Reinforcement Learning in less than 400 lines of C (github.com/antirez)
This code implements a neural network that learns to play tic-tac-toe using reinforcement learning, just playing against a random adversary, in under 400 lines of C code, without any external library used.
Reinforcement Learning, Programming, C Programming, Tic-Tac-Toe
10 points by antirez 109 days ago | 4 comments
Vulkan Game Engine Series Written in C – Travis Vroman (youtube.com)
Vulkan, Game Engines, Programming, C Programming, YouTube
21 points by nill0 114 days ago | 1 comments
Robust Wavefront OBJ model parsing in C (nullprogram.com)
Wavefront OBJ is a line-oriented, text format for 3D geometry. It’s widely supported by modeling software, easy to parse, and trivial to emit, much like Netpbm for 2D image data. Poke around hobby 3D graphics projects and you’re likely to find a bespoke OBJ parser. While typically only loading their own model data, so robustness doesn’t much matter, they usually have hard limitations and don’t stand up to fuzz testing.
3D Graphics, Software Development, Programming, C Programming, Parsing
93 points by ingve 116 days ago | 66 comments
Cursed fire or #define black magic (ssloy.github.io)
Have you ever wondered whether it is possible to write fully functional code using only the #define directive in C?
C Programming, Programming Languages, Code Optimization, Computer Science, Hacks
34 points by davikr 128 days ago | 5 comments
Examples of quick hash tables and dynamic arrays in C (nullprogram.com)
This article durably captures my reddit comment showing techniques for std::unordered_map and std::vector equivalents in C programs. The core, important features of these data structures require only a dozen or so lines of code apiece. They compile quickly, and tend to run faster in debug builds than release builds of their C++ equivalents. What they lack in genericity they compensate in simplicity. Nothing here will be new. Everything has been covered in greater detail previously, which I will reference when appropriate.
Data Structures, C Programming, Performance, Optimization
26 points by signa11 157 days ago | 10 comments
Examples of quick hash tables and dynamic arrays in C (nullprogram.com)
This article durably captures my reddit comment showing techniques for std::unordered_map and std::vector equivalents in C programs. The core, important features of these data structures require only a dozen or so lines of code apiece. They compile quickly, and tend to run faster in debug builds than release builds of their C++ equivalents. What they lack in genericity they compensate in simplicity. Nothing here will be new. Everything has been covered in greater detail previously, which I will reference when appropriate.
C Programming, Data Structures, Performance, Optimization
29 points by grep_it 159 days ago | 9 comments