string::rend
Return a reverse iterator to the character following the last character of the reversed container.
Synopsis
string::reverse_iterator
rend() noexcept; (1)
string::const_reverse_iterator
rend() const noexcept; (2)Description
Returns the pointed-to character that corresponds to the character preceding the first character of the non-reversed container. This character acts as a placeholder, attempting to access it results in undefined behavior.
Complexity
Constant.
Exception Safety
No-throw guarantee.