Structure padding and packing

Question

Consider:

struct mystruct_A
{
   char a;
   int b;
   char c;
} x;

struct mystruct_B
{
   int b;
   char a;
} y;

The sizes of the structur

Answer 1

There are no buts about it! Who want to grasp the subject must do the following ones,

• Peruse The Lost Art of Structure Packing written by Eric S. Raymond
• Glance at Eric's code example
• Last but not least, don't forget the following rule about padding that a struct is aligned to the largest type’s alignment requirements.