How is dynamic memory managed in std::vector?

Question

How does std::vector implement the management of the changing number of elements: Does it use realloc() function, or does it use a linked list?

Thanks.

Answer 1

The memory managed by std::vector is guaranteed to be continuous, such that you can treat &vec[0] as a pointer to the beginning of a dynamic array.

Given this, how it actually manages it's reallocations is implementation specific.