std::queue::back
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | reference back(); | ||
| const_reference back() const; | ||
Returns reference to the last element in the queue. This is the most recently pushed element. Effectively calls c.back().
| Contents | 
[edit] Parameters
(none)
[edit] Return value
reference to the last element
[edit] Complexity
Constant
[edit] See also
| access the first element (public member function) | |
| inserts element at the end (public member function) |