Automatically Calc struct size??

[rustywaters]

Hi,
I am trying to remember how I used to automatically calculate the size of a struct, inside the struct:

for example:
struct myStruct
{
int miInt;
int miAnotherInt;
char mcChar;
int *mpiPInt;
/* SOMETHING HERE such as : */
int miSizeofmyStruct = OFFSETOF(miSizeofmyStruct) - OFFSETOF(miInt);
}; /* OR SOMETHING LIKE THIS */

any help??

 

[xwb]

I'm not sure what OFFSETOF does but you have to add sizeof(miSizeofmyStruct) to it. The main problem is word alignment. The size of a struct varies according to the alignment.

Why not just use sizeof (struct myStruct)?