#include <iostream>

#include <vector>

#include <iterator>

int main()

{

std::vector<int> v = { 3, 1, 4 };

auto vi = std::rbegin(v); // the type of `vi` is std::vector<int>::reverse_iterator

std::cout << "*vi = " << *vi << '\n';

*std::rbegin(v) = 42; // OK: after assignment v[2] == 42

// *std::crbegin(v) = 13; // error: the location is read-only

int a[] = { -5, 10, 15 };

auto ai = std::rbegin(a); // the type of `ai` is std::reverse_iterator<int*>

std::cout << "*ai = " << *ai << '\n';

auto il = { 3, 1, 4 };

// the type of `it` below is std::reverse_iterator<int const*>:

for (auto it = std::rbegin(il); it != std::rend(il); ++it)

std::cout << *it << ' ';

}