Constant-sized vector

Question

Does someone know the way to define constant-sized vector?

For example, instead of defining

std::vector

it will be

Answer 1

The std::vector can always grow dynamically, but there are two ways you can allocate an initial size:

This allocates initial size and fills the elements with zeroes:

std::vector v(10);
v.size(); //returns 10

This allocates an initial size but does not populate the array with zeroes:

std::vector v;
v.reserve(10);
v.size(); //returns 0