i have a virus Mackeeper and Zipcloud i have tried to get rid of them but they still posits

Did you download Mackeeper or are you just getting ads?

If the latter, try AdwareMedic:

http://www.adwaremedic.com/index.php

If no success, use these Apple Support directions:

https://support.apple.com/en-us/HT203987

If you have Mackeeper installed, ask for uninstall directions.

Ciao.

Do not install MacKeeper (and how to uninstall it if you have):

https://discussions.apple.com/docs/DOC-6221

(Please note that references to the original developers, Zeobit, also now refer to Kromtech Alliance Corp, who acquired MacKeeper and PCKeeper from ZeoBit LLC in early 2013.)