C语言代码解决问题

解题思路:

注意事项:

参考代码:

#include<stdio.h>

#include<stdlib.h>

struct student

{

    long int id;

    float score;

};

int main()

{

    int n,i,j,k;

    struct student* a;

    scanf("%d %d", &n,&k);

    a = (int*)malloc(n * sizeof(int));

    for (i = 0; i < n; i++)

        scanf("%ld %f", &a[i].id, &a[i].score);

    for(i=0;i<n-1;i++)

    {

        for(j = 0; j < n - i - 1; j++)

        {

            if (a[j].score < a[j + 1].score)

            {

                struct student temp;

                temp = a[j];

                a[j] = a[j + 1];

                a[j + 1] = temp;

            }

        }

    }

    printf("%ld %.1f", a[k-1].id, a[k-1].score);

    free(a);

    return 0;

}