std::array<T,N>::rend, std::array<T,N>::crend

 

C++

Compiler support

Freestanding and hosted

Language

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Technical specifications

Symbols index

External libraries

 

Containers library

Sequence

array (C++11)

vector

deque

forward_list (C++11)

list

Associative

set

multiset

map

multimap

Unordered associative

unordered_set (C++11)

unordered_multiset (C++11)

unordered_map (C++11)

unordered_multimap (C++11)

Adaptors

stack

queue

priority_queue

Views

span (C++20)

 

std::array

Member functions

Element access

array::at

array::operator[]

array::front

array::back

array::data

Iterators

array::beginarray::cbegin

array::endarray::cend

array::rbeginarray::crbegin

array::rendarray::crend

Capacity

array::empty

array::size

array::max_size

Modifiers

array::fill

array::swap

Non-member functions

get

std::swap

to_array (C++20)

operator==operator!=operator<operator>operator<=operator>=operator<=> (until C++20)(until C++20)(until C++20)(until C++20)(until C++20)(C++20)

Helper classes

tuple_size

tuple_element

Deduction guides(C++17)

 

reverse_iterator rend() noexcept;		(until C++17)
constexpr reverse_iterator rend() noexcept;		(since C++17)
const_reverse_iterator rend() const noexcept;		(until C++17)
constexpr const_reverse_iterator rend() const noexcept;		(since C++17)
const_reverse_iterator crend() const noexcept;		(until C++17)
constexpr const_reverse_iterator crend() const noexcept;		(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.

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

rbegincrbegin (C++11)	returns a reverse iterator to the beginning (public member function)
rendcrend (C++14)	returns a reverse end iterator for a container or array (function template)