Why is my union's size bigger than I expected?

Question

When I print the size of a union like this:

union u {
  char c[5];
  int i;
} un;

using this:

int _tmain(int argc, _TCHAR*          


        

Answer 1

Thanks for your suggestions. I tried this with a lots of examples and looks that union size is equivalent to (size of max element)+ padding(depending upon the size of highest datatype used).