typedef struct
{
  short d01 : 2;   //违背1
  short d02 : 2;   //违背2
  short res : 12;  //违背3
} sData;

int main ( void )
{
  sData my_data;

  my_data.d01 = 1;
  my_data.d02 = 1;
  my_data.res = 0;

  return ( 0 );
}