Is there a way to get documentation(like javadoc) in a visual-c++ project?
I'm using visual studio 2010.
You could use the XML-Documentation format, supported by VS2010, too. http://msdn.microsoft.com/en-us/library/ms177226%28VS.80%29.aspx
After commenting your code, you can use Sandcastle to create a MSDN-like documentation: http://sandcastle.codeplex.com/. (Here is a GUI representation for Sandcastle, which is a lot easier to use: https://github.com/EWSoftware/SHFB)
I use AtomineerUtils to create the XML-Documentation headers automatically. This tool will help you a lot. You can have free base version here: http://www.atomineerutils.com/products.php