What is the capacity of a std::vector in C++?
An example of an AI chatbot conversation about std::vector capacity in C++.
What is the capacity of a std::vector in C++?
The capacity of a std::vector is the size of the storage space currently allocated for the vector, which can be greater than or equal to its size.
How does the capacity change when I add elements?
When you add elements to a std::vector and it exceeds its current capacity, it automatically reallocates memory to accommodate the new elements, typically doubling its capacity.
Can I reserve a specific capacity for a std::vector?
Yes, you can use the reserve() function to allocate a specific capacity for a std::vector, which can help optimize performance.
What happens if I call resize on a std::vector?
Calling resize() changes the size of the vector. If the new size is larger, new elements are added; if smaller, elements are removed.
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