What are STL vectors in C++?

Can you explain what STL vectors are in C++?

STL vectors are dynamic arrays provided by the Standard Template Library in C++. They can resize automatically.

How do I declare and initialize a vector?

You can declare a vector like this: std::vector<int> myVector; and initialize it with values like this: std::vector<int> myVector = {1, 2, 3};.

What are some common operations I can perform on vectors?

Common operations include adding elements with push_back(), removing elements with pop_back(), and accessing elements using the [] operator.

Are there any performance considerations I should be aware of?

Yes, vectors can be inefficient for frequent insertions and deletions in the middle, as they may require shifting elements.