America01@gmail.com wrote:
> Hello, I am new to C++ and I had a question I couldn't seem to find a
> answer to. I want to see the source of cin, I am running Linux and I
> went into /usr/include and didn't find anything retaining to cin. Is
> there even a source file for cin? I would assume so since it's a
> function...

If you want to use 'cin' as a programmer, you should not care much about it,
'cin' is just there. You should be aware that cin, being an istream-object, is
just an interface that you can use to retrieve data. What the actual source of
the data is, depends on how the executable/binary on your system had been
launched (for example the user may have 'piped in' the contents of a file). Thus
it is up to C++ run-time environment to provide you with the proper object
behind 'cin' (which would be either a ifstream or some other stream that is tied
to the console). This is all very platform dependent, and thus off-topic in this
newsgroup.

As a user of 'cin' you should write code that does not depend on which data
source for 'cin' is actually used.

Regards,
Stuart