[C++] How to fix these notebook problems?

I know it’s Udacity and I am trying to get their attention as well:

I added a ‘return 0;’ statement and the nb faults and the other one’s controls seem to be missing:

It’s really hard to know without being familiar with those notebooks. Do those code work correctly on repl.it? It’s really hard to say much from screenshots.

They are just regular Jupyter notebooks, but these have a C++ kernel. I always thought notebooks only had Julia, Python, or R kernels.

You code works fine in repl.it. It has to be a question of their environment.

Thanks Dungeon Master.

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