题解 | #统计成绩#

#include <stdio.h>

int main() {
    float max = 0.0f, min = 100.0f, aver = 0.0f, sum= 0.0f;
    //max一定比0大，min一定比100小
    float a = 0.0f, b = 0.0f;
    int n = 1, i;
    scanf("%d", &n);
    for (i = 1; i <= n; i++)
    {
        scanf("%f", &a);
        sum += a;
        aver = sum/n;
        if (a > max)
        {
            if (a < min)
            {
                min = a;
            }
            b = a;
            a = max;
            max = b;
        }
        else if (a < min)
            min = a;
    }
    printf("%.2f %.2f %.2f", max, min, aver);
    return 0;}