color-flood-for-amstrad-cpc
printf-tac-toe
| color-flood-for-amstrad-cpc | printf-tac-toe | |
|---|---|---|
| 1 | 18 | |
| 3 | 2,029 | |
| - | - | |
| 10.0 | 0.0 | |
| over 1 year ago | almost 2 years ago | |
| C | C | |
| - | GNU General Public License v3.0 only |
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color-flood-for-amstrad-cpc
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Few lesser known tricks, quirks and features of C
const int myarray[mysize];
* Good news: C can do compile time constant structs and array with deep self-references.
Yes, in C you can define and fully declare complex data structures that are accepted as compile-time constants, including pointers to parts of itself.
See "self-contained, statically allocated, totally const data structure with backward and forward references (pointers)?" for a previous example at https://stackoverflow.com/questions/47037701/can-c-syntax-de...
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I used this for a game on a retro machine where such a data structure avoids code which would have been several times (perhaps 10 times) bigger: https://github.com/cpcitor/color-flood-for-amstrad-cpc/blob/...
Here's another take showing two variant: where overall construct is an array then a struct: https://gist.github.com/fidergo-stephane-gourichon/792c194e1...
printf-tac-toe
- A C implementation of tic-tac-toe in a single call to printf
- Printf-tac-toe: tic-tac-toe in a single call to printf
- Tic-tac-toe in a single call to printf
- GitHub – carlini/printf-tac-toe: tic-tac-toe in a single call to printf
- Printf-Tac-Toe
- Tic-tac-toe implemented in a single call to printf
- A c implementation of tic-tac-toe in a single call to printf.
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Few lesser known tricks, quirks and features of C
Somewhat related to this, printf alone in a loop is Turing-complete, by using %-directives like that. It was introduced in “Control-Flow Bending: On the Effectiveness of Control-Flow Integrity” (Carlini, et al. 2015) and the authors have implemented Brainfuck and an obfuscated tic-tac-toe with it.
[0]: https://nebelwelt.net/publications/files/15SEC.pdf
[1]: https://github.com/HexHive/printbf
[2]: https://github.com/carlini/printf-tac-toe
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Rule
My favourite is still that printf is Turing Complete
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Hacker News top posts: Jun 8, 2022
C implementation of Tic-Tac-Toe in a single call to printf\ (17 comments)
What are some alternatives?
printbf - Brainfuck interpreter inside printf
tinyformat - Minimal, type safe printf replacement library for C++
C++ Format - A modern formatting library
talent-plan - open source training courses about distributed database and distributed systems
moonlight-docs - Moonlight Documentation
meta
papers
papers - ISO/IEC JTC1 SC22 WG21 paper scheduling and management
static-print - A GCC 7.1 patch that adds a 'static_print' statement to C++.
MicroPython - MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems
voxelcopter - Multithreaded helicopter simulator with CPU-only rendering (ray casting) using terrain from the 1992's game Comanche.