std::array::rend,std::array::crend(3)

NAME
std::array::rend,std::array::crend - std::array::rend,std::array::crend

Synopsis
   reverse_iterator rend() noexcept; (1) (since C++11)
                        (constexpr since C++17)
   const_reverse_iterator rend() const noexcept; (2) (since C++11)
                        (constexpr since C++17)
   const_reverse_iterator crend() const noexcept; (3) (since C++11)
                        (constexpr since C++17)
   Returns a reverse iterator to the element following the last element of the reversed
   array. It corresponds to the element preceding the first element of the non-reversed
   array. This element acts as a placeholder, attempting to access it results in
   undefined behavior.
   range-rbegin-rend.svg

Parameters
   (none)

Return value
   Reverse iterator to the element following the last element.

Complexity
   Constant.

Example
// Run this code
 #include <algorithm>
 #include <array>
 #include <iostream>
 int main()
 {
     std::array<int, 11> a{1, 11, 11, 35, 0, 12, 79, 76, 76, 69, 40};
     // print elements of array in reverse order using const_reverse_iterator`s
     std::for_each(a.crbegin(), a.crend(), [](int e){ std::cout << e << ' '; });
     // ^^ ^^
     std::cout << '\n';
     // modify each element of array using non-const reverse_iterator`s
     std::for_each(a.rbegin(), a.rend(), [](int& e){ e += 32; });
     // ^ ^ ^
     // print elements as chars in reverse order using const_reverse_iterator`s
     std::for_each(a.crbegin(), a.crend(), [](char e){ std::cout << e; });
     // ^^ ^^ ^^^^
     std::cout << '\n';
 }

Output:
 40 69 76 76 79 12 0 35 11 11 1
 Hello, C++!

See also
   rbegin returns a reverse iterator to the beginning
   crbegin (public member function)
   rend returns a reverse end iterator for a container or array
   crend (function template)
   (C++14)