I noticed you were having some trouble with VS-Code.
Here's a good list of commands which can complete your task.
I noticed you stated that you were on a Mac as well, so more than likely the CTRL + option won't be necessary; try the " ⌘ + " instead!
- To remove / hide the folder explorer window, simply hit "⌘ + b"
- To remove / hide the terminal as well, try using "⌘ + `"
Edit:
I noticed you were also having some issues with the output of your code. The "addresses" to your output are symbols that ( usually ) address incorrect operations.
Try doing something like this when writing out your function:
printf( "i%\n" ); // <- Adding a newline to the operation deducts the symbol.
I hope this helps-