关于结构体的复制

struct st_task{    uint16_t id;    uint32_t value;    uint64_t timestamp;};

void fool(){    st_task task = {};    uint64_t a = 0x00010001;    memcpy(&task, &a, sizeof(uint64_t));    printf("%11u,%11u,%11u", task.id, task.value, task.timestamp);}

复制结构体时，从低位到高位，所以对于task的划分，很明了了