How does C++ manage memory for vectors?
C++ uses dynamic memory allocation for vectors. When you create a vector, it allocates memory on the heap.
What happens when a vector grows beyond its capacity?
When a vector exceeds its capacity, it allocates a new larger memory block, copies the existing elements, and frees the old memory.
Can I control the capacity of a vector?
Yes, you can use the reserve()
method to pre-allocate memory for a specific number of elements.
What is the difference between size()
and capacity()
?
size()
returns the number of elements in the vector, while capacity()
returns the total number of elements the vector can hold without reallocating.
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