B: struct birthday i int year, month, day; 3 struct i char name[ 8]; int score 2 burse i struct birthday csny i 3 tongxue, tongxue; 存储形式: brithday name[8] score[01 score[ll burse year month day 8字节2字节2字节2字节2字节2字节2字节例：struct birthday { int year, month, day ; } ; struct { char name[8]; int score[2], burse ; struct birthday csny ; } tongxue1, tongxue2; 存储形式： name[8] score[0] score[1] burse brithday year month day 8字节 2字节 2字节 2字节 2字节 2字节 2字节