孙谙炫2302580056

[sunanxuan]

#include <stdio.h>
#include <stdlib.h>
strucu student {
int id;
int score;
}
void swap(struct student *a,struct student *b){
struct student temp=*a;
*a=*b;
*b=temp;
}
void bubblesort(struct student arr[],int n){
int i,j;
for(i=0;j<n-i-1;j++){
if(arr[j].score>arr[j+1],score){
swap(&arr[j],&arr[j+1]);
}
}
}
void calculateStatistics(struct Student arr[], int n) {
int failCount = 0;
int totalScore = 0;

for (int i = 0; i < n; i++) {
    totalScore += arr[i].score;

    if (arr[i].score < 60) {
        failCount++;
    }
}

if (n != 0) {
    printf("平均成绩: %.2f\n", (float)totalScore / n);
} else {
    printf("没有学生成绩\n");
}

printf("不及格人数: %d\n", failCount);

}
int main() {
int n;
printf("请输入学生人数: ");
scanf("%d", &n);

struct Student *students = (struct Student *)malloc(n * sizeof(struct Student));
printf("请输入学生学号和成绩:\n");

for (int i = 0; i < n; i++) {
    printf("学号: ");
    scanf("%d", &students[i].id);

    printf("成绩: ");
    scanf("%d", &students[i].score);
}

bubbleSort(students, n);
printf("按成绩从高到低排序的学生学号和成绩:\n");

for (int i = 0; i < n; i++) {
    printf("学号: %d, 成绩: %d\n", students[i].id, students[i].score);
}

calculateStatistics(students, n);
free(students);
return 0;