https://github.com/Scrumplesplunge/aoc2020

Advent of Code 2020 solutions, in plain C, using no libraries, not even the standard library.
https://github.com/Scrumplesplunge/aoc2020

Last synced: 6 days ago
JSON representation

Advent of Code 2020 solutions, in plain C, using no libraries, not even the standard library.

• Host: GitHub
• URL: https://github.com/Scrumplesplunge/aoc2020
• Owner: Scrumplesplunge
• Created: 2020-11-30T23:24:21.000Z (almost 4 years ago)
• Default Branch: master
• Last Pushed: 2023-08-14T20:12:37.000Z (about 1 year ago)
• Last Synced: 2024-08-02T16:35:06.690Z (3 months ago)
• Language: C
• Size: 674 KB
• Stars: 8
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# Advent of Code 2020

These are my solutions to Advent of Code 2020. To challenge myself, I am going

to try to solve every problem in plain C, with no libraries, using only `read`,

`write` and `exit` to interact with the outside world. Since I'm not using

a standard library, some parts of the code must necessarily be non-portable, so

I am assuming x86. The result of this overall approach is very tiny binaries:

    $ make opt

    ...

    $ src/size.sh

    day01   559

    day02   659

    day03   524

    day04  1049

    day05   404

    day06   340

    day07  1058

    day08  1094

    day09   897

    day10   732

    day11  1296

    day12   980

    day13  1316

    day14  1384

    day15   421

    day16  1456

    day17  1450

    day18   920

    day19  1068

    day20  2612

    day21  1494

    day22  1191

    day23   616

    day24   696

    day25   762

    total 24978

## Build

  * `make`, `make debug` - build the debug versions of each solver.

  * `make opt` - build the optimized versions.

  * `make all` - build both debug and optimized versions of each solver.

## Test

  * `src/test.sh [debug|opt]` - Run all solvers with all available inputs.