please help me to do my assignment

Here's help:

Google

Library (it has books)

If you were able to post here at CR4, you're able to do the research.

Sorry to sound snarky.

Whats that book.if can you mail me on eshanx@ymail.com

pls

Excerpted from CR4 FAQ:

• Look for answers before you post. Check a search engine or two to see if you can find the answer to your question or a collection of useful links. If it's not or if the answer is unclear, then that's a pretty good justification for asking the question. This is not to stifle questions, but you're less likely to be insulted if you have done a little research ahead of time. (thanks Silas Marner)
• Do your own homework. CR4 is not a homework cheat site. While some here might relish the opportunity to sharpen up old rusty skills by working the homework problem, consider this and consider it well. If you cheat on your homework by using someone else's answers, you are only cheating yourself, because the purpose of any homework or other college assignments is to help you learn, by practice, repetition, and self-discovery. (thanks STL Engineer)

If this was the first time you tried this, I would be a bit less "snarky" (thanks Sue!), but I see you tried it once before. You cannot hope to learn very much by getting other people do your work for you. READ THE TEXTBOOK! Spend some time thinking about the question.

Mike