Mastodawn

Please, can anybody explain this #C #programming #riddle? It was originally intended as example for first lesson of C course for beginners, but I fell into trap!

The source:

#include <stdio.h>

void main(void)
{
int a=1, b=1;
printf("Hello++: a==%d, b==%d, a++==%d, ++b==%d, a==%d, b==%d, a--==%d, --b==%d, a==%d, b==%d\n",a,b,a++,++b,a,b,a--,--b,a,b);
}

The output, when compiled by #gcc:

Hello++: a==1, b==1, a++==0, ++b==1, a==1, b==1, a--==1, --b==1, a==1, b==1

(Hint: it works as expected, if you separate the single printf into 5 printf-s with 2 arguments each. The problem is unexpected behavior of C++-ish ++ and -- operators, when used multiple times as multiple function arguments. Remainds me of multiple evaluation of macro arguments, or something like that)

Ona Codinenca 17h ago

El president de la Generalitat Salvador Illa anuncia l’adjudicació de les obres de la variant que començaran a l’estiu

#variant #C-59 #infraestructures #generalitat #salvadorIlla

https://onacodinenca.cat/el-president-de-la-generalitat-salvador-illa-anuncia-ladjudicacio-de-les-obres-de-la-variant-que

El president de la Generalitat Salvador Illa anuncia l’adjudicació de les obres de la variant que començaran a l’estiu

Els treballs tenen un cost de 43 milions d'euros. L’anunci d’Illa és celebrat per l’Ajuntament de Sant Feliu i representants institucionals del Vallès Oriental, el Moianès i municipis veïns, que han assistit a l'acte de presentació.

Ona Codinenca

Diane Bruce 18h ago

The realisation 'C' was a failed Fortran compiler explains so much.

https://www.nokia.com/bell-labs/about/dennis-m-ritchie/chist.html

"Challenged by McIlroy's feat in reproducing TMG, Thompson decided that Unix—possibly it had not even been named yet—needed a system programming language. After a rapidly scuttled attempt at Fortran, he created instead a language of his own, which he called B."

#BSD #C #Unix

Johanna Berger 21h ago

Hans Pleschinski: Bildnis eines Unsichtbaren/Der Flakon

https://kultursalon.blog/2026/03/27/hans-pleschinski-bildnis-eines-unsichtbaren-der-flakon/ #18.Jahrhundert, #70erUnd80erJahre, #AIDS, #Beziehungsroman, #BildnisEinesUnsichtbaren, #BiographischerRoman, #C.H.BeckVerlag, #DerFlakon, #Dresden, #FriedrichDerGroße, #GräfinBrühl, #HansPleschinski, #München, #Schwulenszene, #Totenklage

Hans Pleschinski: Bildnis eines Unsichtbaren/Der Flakon

Der Geliebte ist tot. Der Zurückbleibende schreibt einen Text über ihn, über die Beziehung, über das Kennenlernen, die Herkunft des einen und des anderen. Es ist eine Totenklage und die Erinnerung …

Kultursalon

elkement 21h ago

Drawing With Code

What does it even mean? I see two main ways of drawing with code: 1) going for a representation of a thing you have in mind, or 2) using an algorithm and elements of randomness to surprise you. Representational I have code-drawn Lissajous curves with code - from a picture in mind before I started. I saw the curves as built from wires as thin as possible, or as thick metallic tubes. I have been lucky that I mathematical objects can be compressed so well into code. It would be way more […]

https://elkement.art/2026/03/27/drawing-with-code/

Lobsters 22h ago

C Preprocessor tricks, tips, and idioms https://lobste.rs/s/noyefo #c #programming
https://github.com/pfultz2/Cloak/wiki/C-Preprocessor-tricks,-tips,-and-idioms

C Preprocessor tricks, tips, and idioms

0 comments

Lobsters

Habr 23h ago

Как воспроизводить WebRTC видео на Qt клиенте

Что ж... Недавно я увлекся C++, поэтому давайте разберемся в какой-нибудь технологии и напишем по ней статью. Мой выбор пал на WebRTC и клиент на Qt.

https://habr.com/ru/articles/1016020/

#WebRTC #qt #c++ #go #видео

Как воспроизводить WebRTC видео на Qt клиенте

Что ж... Недавно я увлекся C++, поэтому давайте разберемся в какой-нибудь технологии и напишем по ней статью. Мой выбор пал на WebRTC и клиент на Qt. Результаты Начнем с теории и обозначим фронт...

Хабр

Kurt Kremitzki 23h ago

#TodayILearned about https://codebrowser.dev/ "an online #C, C++, #Rust & Dart #code browser. It focuses on improving the code navigation with proper semantic highlighting and tooltips." Thanks @kdab !