please tell me about structures and why it use in c++. what is the main advantage of use structure in c++.and about arrys what is the main differnce between arrays and structures. and give me hacking tips for yahoo messenger how can i crack my friend password.

siddhant3s commented: Hacking is not Cracking. Get the F**k out of here lamer. -2

I can't tell if this is a joke or not.

It sounds like a homework question. How about doing a little bit of research on Data Structures and on information represented through an array?

As for hacking tips on cracking your friends password, I don't know. I don't like cracking into other people's information or personal databases. Why do you want to hack into your friend's account anyways?