#include <stdio.h>

int a[] = { 17, 23, 4, 9, 19, 33, 8, 45 };

int sum(int v[], int n) {
    int s = 0;
    for (int i = 0; i < n; i++) {
        s = s + v[i];
    }
    return s;
}

double average(int v[], int n) {
    return (double)sum( a, n ) / n;
}

int main() {
    printf("somma = %d\nmedia = %lf\n", sum( a , 7 ), average( a, 7 ));
}