C++: Iterators vs Indexing

What are the main differences between iterators and indexing in C++?

Iterators provide a way to traverse elements in a container without exposing the underlying structure, while indexing allows direct access to elements using their position.

Can you give me an example of when to use iterators instead of indexing?

Sure! Use iterators when working with STL algorithms like std::sort, which require a range of elements, while indexing is simpler for fixed-size arrays.

Are there performance differences between using iterators and indexing?

Yes, iterators can be more efficient for certain operations, especially with complex data structures, while indexing is faster for simple arrays.

What about safety? Are there any safety concerns with either method?

Iterators can help prevent out-of-bounds errors since they are designed to work within the container's limits, while indexing can lead to such errors if not carefully managed.