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@ -70,11 +70,33 @@ Input course number(m<=%d):
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Management for Students' scores
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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: //用户输入选项后将结果返回到主函数
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```
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### C3:计算每个学生各门课程的总分和平均分
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### C3: 计算每个学生各门课程的总分和平均分
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选择菜单命令2，通过学号查找到该学生的结构体，通过结构体找到各科的成绩，然后进行求和和平均
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```
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stu[i].sum+=stu[i].score[j];//求和
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stu[i].aver=stu[i].sum/m;//求平均
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```
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### C4:计算每门课程的总分和平均分
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选择菜单命令3
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### C5:按每个学生的总分由高到低排出名次表
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### C6:按每个学生的总分由低到高排出名次表
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