What is CrazyEngico.com (CE)?

CrazyEngico (CE) is a one-stop solution for interview questions and answers, domain knowledge, e-learning, tutorials, articles and many more learning material.
e-learning - Intelligent e-learning tutorials and articles
Domain Knowledge Learn about various business domains/verticals such as Banking, Financial, Insurance, Healthcare and many more...
Interview Questions and Answers - Post your questions and answers. 1000+ database of ready questions and answers available to prepare for an interview.
Tutorials - 300+ video tutorials from beginner to expert level.
Articles - 300+ technical articles to understand concepts.
Forum - A technical forum to post your queries/responses.

Search Questions

Interview Questions/Answers

Ads
Question
Interview Q & A >> C++ >> What is an Iterator class?

<< Previous Question Navigator Next >>

0        0
What is an Iterator class? (Views: 1048)


Answers


0        0

A class that is used to traverse through the objects maintained by a container class. There are five categories of iterators: input iterators, output iterators, forward iterators, bidirectional iterators, random access. An iterator is an entity that gives access to the contents of a container object without violating encapsulation constraints. Access to the contents is granted on a one-at-a-time basis in order. The order can be storage order (as in lists and queues) or some arbitrary order (as in array indices) or according to some ordering relation (as in an ordered binary tree). The iterator is a construct, which provides an interface that, when called, yields either the next element in the container, or some value denoting the fact that there are no more elements to examine. Iterators hide the details of access to and update of the elements of a container class. The simplest and safest iterators are those that permit read-only access to the contents of a container class.

Submitted By: Anonymous | Created On: 7/13/2009 9:55:30 AM


Post your Answer
Your answer will be first reviewed by our administrator before it appears on the site.

Your Answer:


 
Display Name:





By clicking on Submit button you agree to the Terms of Service agreement.




Copyright © 2018 CrazyEngico.com. All rights reserved.
CrazyEngico.com is not responsible for the content and CrazyEngico.com does not evaluate or guarantee the accuracy of any CrazyEngico.com content.
Please read our terms of service agreement before using this site.

feedback