C++: std::vector vs. Array

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

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

Can you explain how memory allocation works for both?

Arrays use stack memory for fixed sizes, while std::vector uses heap memory, allowing for dynamic allocation and deallocation.

Which one is more efficient in terms of performance?

Arrays are generally faster due to their fixed size and contiguous memory allocation, but std::vector offers more flexibility.

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

Use std::vector when you need dynamic sizing, easier memory management, or when working with STL algorithms.