Quiz for Iterators

Q1: What is an iterator in STL?

A. An object that points to an element in a container B. A pointer to a function C. A special type of container D. A variable holding a value

Q2: Which of the following iterator types allows random access?

A. Random access iterator B. Input iterator C. Forward iterator D. Bidirectional iterator

Q3: Which iterator type supports both increment and decrement operations?

A. Bidirectional iterator B. Input iterator C. Output iterator D. Forward iterator

Q4: Which iterator type can only be used once to read data?

A. Input iterator B. Forward iterator C. Random access iterator D. Bidirectional iterator

Q5: Which STL function returns an iterator to the beginning of a container?

A. beg() B. begin() C. start() D. first()