已知整型数组int a[]={12,5,9,19,22,-4,66,-17,28,13}。

Question

已知整型数组int a[]={12,5,9,19,22,-4,66,-17,28,13}，求出数组中最大值，最小值,将最小元素与数组首元素交换,最大元素与数据尾元素交换。

显示结果如下图

我的代码一直报错
望大神指点

int main()

{

int a[] = { 12, 5 ,9 ,19 ,22 ,-4 ,66 ,-17 ,28 ,13 }; 
int a_conut = sizeof(a) / sizeof(int); 
int a_min=NULL, a_max= NULL;
int min_i = NULL, max_i = NULL; 
int tmp_data[2]; 
for (int i = 0; i<a_conut ; i++)
{
    if ( a[i] < a_min )
    {
        a_min = a[i]; 、
        min_i = i; 
    }
    else if ( a[i] > a_max ) 
    {
        a_max = a[i]; 
        max_i = i; 
    printf("%d  ", a[i]); 
}
printf("\r\n"); 
tmp_data[0] = a[0]; 
tmp_data[1] = a[a_conut-1]; 

a[0] = a_min; 
a[min_i] = tmp_data[0]; 
a[a_conut-1] = a_max; 
a[max_i] = tmp_data[1]; 

for (int i = 0; i < a_conut; i++)
{
    printf("%d  ", a[i]); 
}

getchar();
return 0;

}

Answer 1

https://blog.csdn.net/qq_41933331/article/details/79889083