How many bytes is unsigned long long?

Question

How many bytes is unsigned long long? Is it the same as unsigned long long int ?

Answer 1

The beauty of C++, like C, is that the sized of these things are implementation-defined, so there's no correct answer without your specifying the compiler you're using. Are those two the same? Yes. "long long" is a synonym for "long long int", for any compiler that will accept both.