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代码实现如下：
#include <stdio.h> struct STU { char name[128]; int num; int chinese; int
math; int Engilsh; int sum; }; int main(int argc, const char *argv[]) { int
sum; int i, j; struct STU stu[4]; printf("请录入学生成绩：\n"); for(i = 0; i < 4; i++)
{ scanf("%d %s %d %d %d", &stu[i].num, stu[i].name, &stu[i].chinese,
&stu[i].math, &stu[i].Engilsh); stu[i].sum =
stu[i].chinese+stu[i].math+stu[i].Engilsh; }
printf("--------------学生成绩显示--------------\n"); for(i = 0 ; i < 4; i++)
printf("学号：%d 姓名：%s 语文成绩：%d 数学成绩：%d 英语成绩：%d 总分：%d\n", stu[i].num, stu[i].name,
stu[i].chinese, stu[i].math, stu[i].Engilsh, stu[i].sum); putchar(10); struct
STU t; for(i = 1; i < 4; i++) { for(j = 0 ; j < 4-i; j++) { if(stu[j].sum <
stu[j+1].sum) { t = stu[j]; stu[j] = stu[j+1]; stu[j+1] = t; } } }
printf("-------------按总分降序排序-------------\n"); for(i = 0 ; i < 4; i++)
printf("学号：%d 姓名：%s 语文成绩：%d 数学成绩：%d 英语成绩：%d 总分：%d\n", stu[i].num, stu[i].name,
stu[i].chinese, stu[i].math, stu[i].Engilsh, stu[i].sum); putchar(10); return
0; }
运行结果：
