Description: (1) Input the economic situation on a class of students one by one entry in the economic situation. Include: Student ID, origin, monthly income, the number of members. The information input into the file income.dat or income.txt. (2) query the economic situation of students. Allowed to check all students, and also allows queries by origin. Search family per capita monthly income below 500 yuan origin number of students learning. Search family per capita monthly income of more than 500 students learn number origin. (3) Statistical economic situation of students in statistics the number of students of more than 500 yuan less than 500 the number of students and their respective proportion.
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新建 Microsoft Word 文档.doc
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