What are Bi-directional iterators?
(a) Iterator same as Forward Iterator
(b) Forward Iterator that can be used in both directions
(c) Iterator that can only be used to access the sequence from both sides
(d) Iterator that can only be used to assign the sequence from both sides
The question was asked in unit test.
The query is from Iterators topic in division Algorithms, Objects & Iterators in C++ of C++