9. What is a forward iterator? 10. What is a bidirectional iterator? 11. What is a random-access iterator? Give a suitable example. 12. Explain how an input iterator is defined in C++. 13. Explain how...

9. What is a forward iterator?

10. What is a bidirectional iterator?

11. What is a random-access iterator? Give a suitable example.

12. Explain how an input iterator is defined in C++.

13. Explain how an output iterator is used in STL.

14. Explain the different types of iterator operators used in STL.

15. Summarise the various types of iterator classes used in C++.