struct date Rint month 3. int day, 4. int year; g 5. struct student 6. int num; 7. char name[20] 8. char sex 9. struct date birthday 10. char addr[30] 11.student1, student21. struct date 2. {int month; 3. int day; 4. int year;}; 5. struct student 6. {int num; 7. char name[20]; 8. char sex; 9. struct date birthday; 10.char addr[30]; 11.}student1,student2;