Regarding code coverage tool in VS 2010 for C++

I want to test code coverage of C++ code in VS 2010. I have following questions regarding thi开发者_开发知识库s:

1. What are steps we have to follow to test code coverage of C++ code in VS 2010.
2. Can code coverage be performed on unmanaged C++?
3. Can code coverage tool provided in VS 2010 for C++ be used with CPP unit, if yes what are the steps we have to follow?

Kindly request to help with an example if possible.

Thanks

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Try this: http://open-tube.com/10-code-coverage-tools-c-c/