NAME

std::basic_string::rend, - std::basic_string::rend,

Synopsis

reverse_iterator rend(); (until C++11)
reverse_iterator rend() noexcept; (since C++11)
(until C++20)
constexpr reverse_iterator rend() noexcept; (since C++20)
const_reverse_iterator rend() const; (until
C++11)
(since
const_reverse_iterator rend() const noexcept; C++11)
(1) (until
C++20)
constexpr const_reverse_iterator rend() const (2) (since
noexcept; C++20)
(since
const_reverse_iterator crend() const noexcept; C++11)
(3) (until
C++20)
constexpr const_reverse_iterator crend() const (since
noexcept; C++20)

Returns a reverse iterator to the character following the last character of the
reversed string. It corresponds to the character preceding the first character of
the non-reversed string. This character acts as a placeholder, attempting to access
it results in undefined behavior.

range-rbegin-rend.svg

Parameters

(none)

Return value

reverse iterator to the character following the last character

Complexity

Constant

Example

// Run this code

#include <algorithm>
#include <iostream>
#include <iterator>
#include <string>

int main()
{
std::string s("A man, a plan, a canal: Panama");
{
std::string c;
std::copy(s.rbegin(), s.rend(), std::back_inserter(c));
std::cout << c <<'\n'; // "amanaP :lanac a ,nalp a ,nam A"
}

{
std::string c;
std::copy(s.crbegin(), s.crend(), std::back_inserter(c));
std::cout << c <<'\n'; // "amanaP :lanac a ,nalp a ,nam A"
}
}

Output:

amanaP :lanac a ,nalp a ,nam A
amanaP :lanac a ,nalp a ,nam A

See also

rbegin returns a reverse iterator to the beginning
crbegin (public member function)
(C++11)
rend returns a reverse iterator to the end
crend (public member function of std::basic_string_view<CharT,Traits>)
(C++17)