#include<stdio.h> (33315)#include<string.h> #include<stdlib.h> (35806)#include<math.h> #include<ctype.h> struct Student{ int id; char name[20]; char sex; int age; long long score; }temp; int cmp(const void *a,const void *b){ /* *(stu*)a是因为：a是个void *类型，要先 用(stu*）将它转成stu*类型，然后再用*取值， 变成stu类型，才能比较大小。*/ struct Student c=*(struct Student*)a; struct Student d=*(struct Student*)b; //按成绩升序排序 return d.score-c.score; } int main(){ int i,j,n; // struct Student* stu = NULL; struct Student stu[1000]; scanf("%d",&n); for(i=0;i<n;i++){ scanf("%d %s %c %d %ld",&stu[i].id,&stu[i].name,&stu[i].sex,&stu[i].age,&stu[i].score); } qsort(stu,n,sizeof(stu[0]),cmp); for(i=0;i<n;i++){ printf("%d ",stu[i].id); printf("%s ",stu[i].name); printf("%c ",stu[i].sex); printf("%d ",stu[i].age); printf("%ld\n",stu[i].score); } free(stu); return 0; }

别急我们三人出动

好这就来