Difference between Structure and Union ?

Question

At least 5 Points ?

Answer 1

struct stores values next to each other. union stores everything on 1 address. both use padding bits if some values dont fit. e.g. a struct with 4 ints uses 256 bit (4*32)
an union with an int, a short array with 2 elements and a byte array with 4 elements uses 32 bit. guess what this can be used for...