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#include<stdio.h>
#include<string.h>
#define size 3
int main()
{
//我们假设此处已有学生的信息
//此处排序函数,在4中已有,函数名sequence()
struct Student
{
int class;//[size];
int number, score;
int ans;
int score1, score2, all_score;//三门成绩分别为score,score1,score2,all_score为了求和