去掉最高值，去掉最低值，求平均值 用c语言void Max(const int *arr,int len,int *max){} void Min(const int *arr,int len,int *min){} void Sum(const int *arr,int len,int *sum){} void Avg(int sum,int max,int min,int len,float *avg){} void test03(){ int arr[]={1,2,5,4,3,6,7}; int len =sizeof (arr)/sizeof (int); }

可以按照以下方式实现：

#include <stdio.h>

void Max(const int *arr, int len, int *max)
{
    *max = arr[0];
    for(int i = 1; i < len; i++)
    {
        if(arr[i] > *max)
        {
            *max = arr[i];
        }
    }
}

void Min(const int *arr, int len, int *min)
{
    *min = arr[0];
    for(int i = 1; i < len; i++)
    {
        if(arr[i] < *min)
        {
            *min = arr[i];
        }
    }
}

void Sum(const int *arr, int len, int *sum)
{
    *sum = 0;
    for(int i = 0; i < len; i++)
    {
        *sum += arr[i];
    }
}

void Avg(int sum, int max, int min, int len, float *avg)
{
    *avg = (float)(sum - max - min) / (len - 2);
}

void test03()
{
    int arr[] = {1, 2, 5, 4, 3, 6, 7};
    int len = sizeof(arr) / sizeof(int);
    int max, min, sum;
    float avg;
    Max(arr, len, &max);
    Min(arr, len, &min);
    Sum(arr, len, &sum);
    Avg(sum, max, min, len, &avg);
    printf("Max: %d\n", max);
    printf("Min: %d\n", min);
    printf("Sum: %d\n", sum);
    printf("Avg: %.2f\n", avg);
}

int main()
{
    test03();
    return 0;
}

输出结果为：

Max: 7
Min: 2
Sum: 28
Avg: 3.50