What are unique features of C++ vectors?

What are unique features of C++ vectors?

C++ vectors are dynamic arrays that can resize automatically. They provide random access, and you can easily add or remove elements.

How do vectors differ from arrays in C++?

Unlike arrays, vectors can change size dynamically, and they manage memory automatically, which makes them more flexible.

Can you explain how to use the push_back method?

Sure! The push_back method adds an element to the end of the vector. For example, if you have a vector named 'vec', you can use 'vec.push_back(value);' to add 'value'.

What happens if I exceed the capacity of a vector?

If you exceed the capacity, the vector will automatically allocate more memory to accommodate the new elements, which may involve copying existing elements to the new memory.

Are there any performance considerations I should be aware of?

Yes, frequent resizing can be costly in terms of performance. It's often better to reserve space in advance using the reserve() method if you know the size in advance.