Beginner question about getting reference to cin

Posted by John C on Stack Overflow See other posts from Stack Overflow or by John C
Published on 2010-05-31T16:32:14Z Indexed on 2010/05/31 16:43 UTC
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I'm having problems wrapping my head around this. I have a function

void foo(istream& input) {
     input = cin;
}

This fails (I'm assuming because cin isn't supposed to be "copyable".

however, this works

void foo(istream& input) {
    istream& baz = cin;
}

Is there a reason that I can get a reference to cin in baz but I cannot assign it to input?

Thanks

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