C++: std::vector Iterators vs Arrays

What are the main differences between std::vector iterators and arrays in C++?

The main differences include dynamic sizing, memory management, and functionality. std::vector can resize, while arrays have a fixed size.

Can you explain how to use iterators with std::vector?

Sure! You can use iterators to traverse a std::vector. For example, you can use a for loop like this: for(auto it = vec.begin(); it != vec.end(); ++it) { /* access *it */ }.

Are there any performance differences between using std::vector and arrays?

Yes, std::vector may have some overhead due to dynamic memory allocation, but it offers more flexibility. Arrays are faster for fixed sizes.

When should I prefer using std::vector over arrays?

Prefer std::vector when you need dynamic sizing, easy memory management, and built-in functions. Use arrays for simple, fixed-size data.