CppQuiz.org is an open source C++ quiz site ran by me, with contributions from the C++ community. If you’re unfamiliar with it, you can read more in its “About” section.

A few weeks ago, I was contacted by Sergey Vasilchenko. Without my knowledge, he’d built a prototype Android app for CppQuiz, and asked for my input. Naturally I was delighted, and since then we’ve been collaborating a bit on the project. I’ve been making some adjustments to the backend (basically adding some API functionality to cppquiz.org) and I’ve also done a bit of testing and review of the app. Most of the work here was by Sergey of course, who implemented the app.

The app works very similarly to the site itself, with the big advantage that it also works when you’re off-line. It downloads all the questions from cppquiz.org on startup, and updates its database regularly. Perfect for your daily, bad reception commute!

Currently training mode is the only available mode, but Sergey is working on a quiz mode too. He’s also planning to open source the app in the near future.

So, go download the C++ Quiz App now, and give it a spin!

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Hi, and welcome to to a new and much cleaner “C++ on a Friday”! The old theme had too small fonts and had a bit too much “design” going on, making it a bit distracting to read.

The new theme has larger fonts, good responsivity, a nice colour scheme, and is overall much more pleasant to read. Enjoy the improved reading experience! :)

 

CppQuiz.org is an open source C++ quiz site ran by me, with contributions from the C++ community. If you’re unfamiliar with it, you can read more in its “About” section.

Thanks to great help from Nicolas Lesser and Simon Brand, all the questions and explanations on CppQuiz.org have now been updated from C++11 to C++17. This task would have taken me a very long time to do on my own, but thanks to Nicolas and Simon, this was all done in no more than four days!

If you want to test your knowledge of C++, try out the quiz now!

If you enjoyed this post, you can subscribe to my blog, or follow me on Twitter.

[start helping now]

CppQuiz.org is an open source C++ quiz site ran by me, with contributions from the C++ community. If you’re unfamiliar with it, you can read more in its “About” section

All the CppQuiz questions are currently targetting C++11. We need to update them for C++17. Most questions will still have the same answers, we just need to update the explanations and references to the standard. A few questions will also have different answers.

Doing this all by myself is going to take months, so I would very much appreciate some help from the community. Everyone who helps will be credited in a blog post when the porting is done.

To make porting as simple as possible, I’ve created a repository containing all the questions. There is a directory for each question, named after the question number. That directory contains the source code of the question in a .cpp file, the hint and explanation in .md files, as well as a README.md explaining everything you need to do to port the question. There’s also an issue for each question, making it easier to track progress. The issue has the same information as the README.md file.

As soon as we’ve updated all the questions in this repository, I’ll import them back into CppQuiz, and from then on CppQuiz will always ask about C++17.

How to help porting questions

There are two ways to contribute, listed below. I prefer the first alternative, but if that prevents you from contributing, the second is also ok.

Contributing using a fork and pull requests

1. Fork the repo by clicking the “Fork” button at the top right.
2. Pick the issue for a question you want to port. Add a comment that you’ll be handling that issue.
3. Follow the instructions in the issue to port the question.
4. Make a pull request. Porting several questions in one PR is fine.

Contributing without a fork

If you think forking and PRs is too cumbersome, or you are not able to do this for other reasons, I’d still appreciate your help:

1. Pick the issue for a question you want to port. Add a comment that you’ll be handling that issue.
2. Follow the instructions in the issue to port the question.
3. Paste the updated files as comments to the issue.

Other ways to help

• Look for questions labeled “help wanted”. It means the person responsible needs a second pair of eyes.
• Look at pull requests, review them and comment “LGTM” if they should be merged.
• Other ideas for help are also welcome, please get in touch (see “Questions” below).

Questions

If you have any questions, either file an issue in the repo, contact @knatten on Twitter, or email me at anders@knatten.org.

[start helping now]