what is difference between defination and declearation? and give ine example?

Just this once I'll point you in the right direction[^]. But, please, if you want to succeed in IT learn to use the tools that will help you.

First, let's figure out what do they have in common: both are not valid English words.
Yes, I do understand English is not your native language. It's not my native, too, so what? Right spelling (capitalization, punctuation, typography) is a matter of elementary politeness. Anyway, spell checkers are freely available as part of many product, including Web browsers.

You need to understand that such questions are incorrect. Please see my past answer on the topic:
what is the difference between the class and encapsulation in programming[^].

Perhaps you should understand what's the valid question. Please see this discussion:
How to ask a good question?[^].

Anyway, did you follow these?

Code Project Questions and Answers FAQ[^]
How to Use Google and Other Tips for Finding Programming Help[^]
Some guidelines for posting questions in the forums[^].

Good luck,

—SA