copy vs std::move for ints

Question

• What\'s difference between default copy and std::move in that example?
• After move the object is there any dependence between new and old ones?

Answer 1

What's difference between default copy and std::move in that example?

There is no difference. Copying something satisfies the requirements of a move, and in the case of built-in types, move is implemented as a copy.

After move the object is there any dependence between new and old

No, there are no dependencies. Both variables are independent.