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@ -214,4 +214,99 @@ Not found!
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```
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```
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Please Input your choice: 10
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Please Input your choice: 10
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For course 1:
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For course 1:
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<60 0 0.00%
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60-70 0 0.00%
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70-80 2 50.00%
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80-90 1 25.00%
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90-100 0 0.00%
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100 1 25.00%
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For course 2:
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<60 0 0.00%
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60-70 0 0.00%
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70-80 0 00.00%
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80-90 2 50.00%
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90-100 2 50.00%
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100 0 0.00%
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For course 3:
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<60 0 0.00%
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60-70 0 0.00%
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70-80 0 0.00%
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80-90 1 25.00%
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90-100 2 50.00%
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100 1 25.00%
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```
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### C12: 打印学生信息
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选择菜单命令11，打印
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```
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Please Input your choice: 11
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2214111006 XuZilin 100 95 86 281 93
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2214111009 XuZigui 77 89 99 265 88
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2214111011 ZhangYu 85 91 98 274 91
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2214111025 LiYujia 75 89 100 264 88
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```
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### C13: 将学生信息保存在文件中
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选择菜单命令 12 ，将学生信息保存在文件 student.txt 中。如果文件不存在，则给出错误信息并退出程序，否则逐个读入
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```
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Please Input your choice: 12
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Failure to open score.txt!
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1 Input record
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2 Calculate total and average score of every course
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3 Calculate total and average score of every student
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4 Sort in descending order by score
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5 Sort in ascending order by score
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6 Sort in ascending order by number
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7 Sort in dictionary order by name
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8 Search by number
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9 Search by name
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10 Statistic analysis
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11 List record
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12 Write to a file
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13 Read from a file
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0 Exit
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Please Input your choice: 12
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2214111006 XuZilin 100 95 86 281 93
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2214111009 XuZigui 77 89 99 265 88
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2214111011 ZhangYu 85 91 98 274 91
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2214111025 LiYujia 75 89 100 264 88
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```
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### 从文件中读取学生信息
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选择菜单命令 13 ，从文件中读取学生的学号、姓名及成绩等信息写入到结构体数组 stu 中。如果文件为空，则给出错误信息并退出程序，反之，逐个读入
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```
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Please Input your choice: 13
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Failure to open score.txt!
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1 Input record
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2 Calculate total and average score of every course
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3 Calculate total and average score of every student
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4 Sort in descending order by score
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5 Sort in ascending order by score
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6 Sort in ascending order by number
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7 Sort in dictionary order by name
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8 Search by number
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9 Search by name
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10 Statistic analysis
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11 List record
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12 Write to a file
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13 Read from a file
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0 Exit
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Please Input your choice: 13
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2214111006 XuZilin 100 95 86 281 93
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2214111009 XuZigui 77 89 99 265 88
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2214111011 ZhangYu 85 91 98 274 91
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2214111025 LiYujia 75 89 100 264 88
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```
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```
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