编译器是否会为 static（编译时）arrays 创建开销？

Question

I know that when you allocate an array with

int* arr = new int[n];

the compile creates an overhead to know how many there elements to deallocate. But does it creates an overhead to static arrays

int arr[4];

I think that the answer is no because you cannot delete[] such array, but I need to know for sure. Thanks!

Answer 1

You are right. No additional storage is required. The deallocation happens automatically in case of variables with automatic storage duration. The compiler has all the information it needs at compile-time to know when and how much memory to deallocate