std::basic_string::rend, std::basic_string::crend

reverse_iterator rend();

const_reverse_iterator rend() const;

const_reverse_iterator crend() const;

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.

Parameters

(none).

Return value

reverse iterator to the character following the last character.

Exceptions

Complexity

Constant.

Example

#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"
  }
}

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

See also