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This is a question I was working on, but I only want to know why the offsets are the way it is (the little red numbers)
Can someone explain to me why in struct s1, the offset went from 0->4->8? From what I understand, since char is 1 byte, there are 3 char’s. so it’s 3 bytes plus 1, to satisfy alignment. But why does it go from 4 to 8, at union u1 b?? Does union has 4 bytes? why?
The union is 4 bytes because that is the size of the largest element it contains, namely a pointer (this must be a 32-bit platform)