Xiaoshan Sun wrote:
i use "sizeof" to get the size of a struct ,defined as:
typedef struct _A {
long data1;
unsigned short data2;
long data3;
}A;
i guess the sizeof(A) should be 10 .however when i compile and print the
value of "sizeof(A)" ,the reult is 12!!
That's exactly to be expected, on any 32-bit platform. It could be even larger on a 64-bit platform.
If you don't use the 'packed' attribute, the layout and alignment of the structure is entirely implementation-dependent.
