已知对学生记录的描述为: structstudent {intnum; charname[20],sex;  struct{intyear,month,day;}birthday; }; structstudentstu;设变量stu中的&quot

已知对学生记录的描述为: structstudent {intnum; charname[20],sex;  struct{intyear,month,day;}birthday; }; structstudentstu;设变量stu中的"生日"是"1995年11月12日",对"birthday"正确赋值的程序是______。

A.year=1995;month=11;day=12;

B.stu.year=1995;stu.month=11;stu.day=12;

C.birthday.year=1995;birthday.month=11;birthday.day=12;

D.stu.birthday.year=1995;stu.birthday.month=11;stu.birthday.day=12;

正确答案:D

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