whats wrong with that?

Question

https://code.sololearn.com/cRO63o7lsW7H/?ref=app

Answer 1

When you use the {} style of instantiation, it needs to be done at the same time as the declaration.
int arr[] = {1,2,3,4,5};
Then index count can optionally be omitted when using this type of instantiation.

Answer 2

yes man!

Answer 3

https://code.sololearn.com/cOXl40Mo6W7v/?ref=app