习题8-10 输出学生成绩

 1 #include <stdio.h>
 2 #include <stdlib.h>
 3 
 4 int main(void)
 5 {
 6     int n;
 7     double *p;
 8     scanf("%d", &n);
 9 
10     p = (double *)calloc(n, sizeof(double));
11     for (int i = 0; i < n; i++)
12     {
13         scanf("%lf", p + i);
14     }
15 
16     double sum = 0;
17     int max_index = 0;
18     int min_index = 0;
19 
20     for (int i = 0; i < n; i++)
21     {
22         sum = sum + p[i];
23         if (p[i] > p[max_index])
24         {
25             max_index = i;
26         }
27         if (p[i] < p[min_index])
28         {
29             min_index = i;
30         }
31     }
32 
33     printf("average = %.2f\n", sum / n);
34     printf("max = %.2f\n", p[max_index]);
35     printf("min = %.2f\n", p[min_index]);
36 
37     free(p);
38     return 0;
39 }