In C++, `std::array` is a container that encapsulates fixed-size arrays. Unlike dynamic arrays like `std::vector`, `std::array` does not have the capability to change its size or manage memory dynamically. Therefore, you cannot reserve capacity or shrink it using `std::array` since its size is fixed at compile time.
If you are looking for a way to reserve capacity and shrink-to-fit behavior, you should consider using `std::vector`. However, if you still want to work with `std::array`, you must define its size at the point of declaration.
Example:
// Example of std::array declaration
#include
#include
int main() {
// Creating an std::array of size 5
std::array arr = {1, 2, 3, 4, 5};
// Displaying elements of the array
for (const auto& elem : arr) {
std::cout << elem << " ";
}
std::cout << std::endl;
return 0;
}
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