实验目的：
1）进一步熟悉面向对象设计
2）熟悉数组
实验要求：
1）　　1-4人一组
2）　　设计一个统计3个年级，4个专业，12个班学生家庭所属地的应用
3）　　给出如果需求是10个专业，30个班。如何修改。 如果需求是除了统计籍贯，还有统计年龄，如何修改？
4）　　应用能测试运行
对统计学生个人信息功能的加强，能够得出全部同学的家庭所属地的分布，进行分班级分专业分年级的同省份人数的统计，以及不同省份的人数统计(Objective:
1) further familiarity with object oriented design
2) familiar array
The experiment requires:
1) a group of 1-4 people
2) an application of a family of 3 grades, 4 majors and 12 classes of students is designed.
3) given that if the demand is 10 major, 30 classes. How to modify it. If the demand is in addition to statistical birthplace, there is a statistical age, how to modify it?
4) application can test run
To strengthen the statistics of student's personal information function, we can get the distribution of all the students' families, and divide them into classes, the statistics of the number of persons in the same province and the number of people in different provinces.)