PVS-Studio team made an entertaining quiz for you. Try to quickly find a bug in a code fragment. If you spot an error - click on it.

Challenge: can you spot an error in C++ code?

by Andrey Karpov

From the article:

You'll see ten code fragments. If you manage to find an error in under 1 minute, you score one point. The 1-minute limit is made on purpose. Otherwise you'll definitely find all errors — code fragments are short. Anyway, treat this quiz as a game, and not as a real test of your programming skills