Introduction - If you have any usage issues, please Google them yourself
1 leap year function: calculate leap year.
2 student achievement system
In the program has saved 10 student information, convenient direct test query function, without the first entry, the 10 records of student number is 1001/1002/1003/1004/1005/1006/1007/1008/1009/1010
Enter student information
Enter students' scores
Query information and score
Modify information
Delete student information
(each function can be carried out circularly and implemented, such as the input does not exist, the number of students required to re enter)