I can't divine what your language and compiler chooses for int and long long, so please stop asking question in terms of ints and ask them in terms of bits or bytes.
The point is that the size of an int or long long depends on which compiler you are using. So as you can see, it is better to discuss these things in terms of bits or bytes (not int and long long) since that makes it clear what you are talking about.

In reply to Re^4: unpacking unsigned long longs by Anonymous Monk
in thread unpacking unsigned long longs by questionnaire

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