题解 | 统计成绩

#include <stdio.h>

int main() 
{
    int n = 0;
    while (scanf("%d", &n) == 1)
    {
        double arr[n];
        int i = 0;
        for (i = 0; i < n ; i++)
        {
            scanf("%lf", &arr[i]);
        }
        int j = 0;
        double temp = 0;
        for (i = 0; i < (n - 1); i++)
        {
            for (j = 0; j < (n - 1 - i); j++)
            {
                if (arr[j] > arr[j + 1])
                {
                    temp = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = temp;
                }
            }
        }
        double sum = 0;
        for (i = 0; i < n; i++)
            sum += arr[i];
        printf("%.2f %.2f %.2f\n",arr[n - 1], arr[0], sum / n);
    }

    return 0;
}