sizeof

[post from old forum]

I have this struct:
struct client_data
{
unsigned long ip_no;
unsigned short port_no;
long size;
short reserved;
};

two shorts ( = 4 bytes) and two longs ( = 8 bytes). But its size is 16 bytes. Does anybody know why?

bera

[post from old forum]

For performance reasons, data needs to be aligned to certain boundaries . Usually 4bytes (32 bits). C compilers will automatically align members of structures on 4byte boundaries unless specifically told not to.

Whatever

[post from old forum]

Look at #pragma pack ... in the help file, if you want to change the default behaviour.

Pelle