It's also worth mentioning that a lot of people can learn C++ syntax (and even more C) and solve programming puzzles without any cheating but usually, especiall

It's also worth mentioning that a lot of people can learn C++ syntax (and even more C) and solve programming puzzles without any cheating but usually, especially in the context of embedded and/or real-time programming, "C/C++ engineer" means somebody who understands how the computer works and is able to make judgments about performance and correctness of the generated code. So even a competent programmer, who might have spent last decade writing GUI in Qt, could be practically worthless for real-time embedded C/C++ while passing any whiteboard tests.