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A student information management system, subject to design a simplified content and student achievement management system and the C language. The system requirements are as follows: (1) The system shall perform the following functions (1) according to the curriculum by class read from a file corresponding usual result, midterm and final exam scores. (2) the percentage of the total grades three grades are defined as constants, and 20 each of the total score of 30 and 50 . (3) calculate the overall rating for each student achievement. (4) calculating the overall average score for the class of a course. (5) count is excellent, the percentage of good, in passing, as well as the number of students failing the total number. Which is superior 100-90 ,89-80 ,79-70 as good as the passing ,69-60 was 60 points or less failed. (6) the required output results in excellent, good, medium, pass, do not pass each section of students to learn numbers.