/*(2)*/
#include <stdio.h>
#define MAX 10
long average(int v[], int n);
long average(int v[], int n)
{
int i;
long sum = 0L;
for (i = 0; i < n; i++)
sum += (v[i] * v[i]);
return sum / n;
}
int main(void)
{
int score[] = {21, 70, 17, 12, 15, 80, 55, 43, 34, 48};
long ave;
ave = average(score, MAX);
printf("Ave: %ld\n", ave);
return 0;
}