C程序错误，哪里的问题

int main(void)

{

int a[] = {1,2,3,4,5,6,7,8,9,10,22,33,44,55,66,77,88,};

int min,max;

printf("main sizeof(a)=%lu ", sizeof(a));

minmax(a, sizeof(a)/sizeof(a[0]), &min, &max);

printf("min=%d,max=%d ", min, max);

return 0;

}