Convert std::vector to array

Question

I have a library which expects a array and fills it. I would like to use a std::vector instead of using an array. So instead of

int array[256];
object->getArray(array);

I would like to do:

std::vector<int> array;
object->getArray(array);

But I can't find a way to do it. Is there any chance to use std::vector for this?

Thanks for reading!

Answer 1

Yes:

std::vector<int> array(256); // resize the buffer to 256 ints
object->getArray(&array[0]); // pass address of that buffer

Elements in a vector are guaranteed to be contiguous, like an array.