std::basic_string::rbegin, std::basic_string::crbegin
From cppreference.com
                    
                                        
                    < cpp | string | basic string
                    
                                                            
                    | reverse_iterator rbegin(); | ||
| const_reverse_iterator rbegin() const; | ||
| const_reverse_iterator crbegin() const; | (since C++11) | |
Returns a reverse iterator to the first character of the reversed string. It corresponds to the last character of the non-reversed string.
Parameters
(none)
Return value
reverse iterator to the first character
Exceptions
| (none) | (until C++11) | 
| noexcept specification:   noexcept | (since C++11) | 
Complexity
Constant
Example
Run this code
#include <iostream> #include <algorithm> #include <iterator> #include <string> int main() { std::string s("Exemplar!"); *s.rbegin() = 'y'; std::cout << s << '\n'; // "Exemplary" std::string c; std::copy(s.crbegin(), s.crend(), std::back_inserter(c)); std::cout << c << '\n'; // "yralpmexE" }
Output:
Exemplary yralpmexE
See also
| (C++11) | returns a reverse iterator to the end (public member function) |