Input a group of students to a certain course exam score of each topic to calculate everyone's score, statistics of each band score 0 ~ 49, 50 ~ 59, 60 ~ 69 ~ 79, 80 ~ 89, 90 ~ 100, the total percentage, the number of required input: course name, test date, student number, student's name, student number, course exam score, the output request 1: course name, test date, students in class, the number of each point and percentage; Output requirements 2: according to the total score from high to low output student information (course name, test date, the student class number, total score),
2. The solution of the problem:
According to the application requirements, the modular design method should be adopted, several function modules design function, for example (for reference only) :
? Input function: completion of 30 students information input everyone and calculate the total score,
? Statistical functions: calculate the number of each point, the total percentage,
? Output function 1: course name, test date, the student number, the number and percentage of each band
? Output function 2: according to the total score from high to low output all take the examination of students' information,
? The main function in the implementation of these functions to complete the program function call,
Note: due to the large amount of data input, the input of data into a text file, paste files stored in the data when running the program to the input,

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