. */
int main(int argc, char* argv[])
{
//#pragma pack(1)
struct gif_hdr
{
char signature...char colormap;
char bgcolor;
char ratio;
}__attribute__((__packed__));
不对齐...,结构体的长度,就是各个变量长度的和 = 3+3+2+4+4+1+1+1 = 19
struct gif_hdr v1 = {1,2,3,4,5,6,7,8,9,10,11};
struct