Array Sum & Avg

#include <stdio.h>
int array_sum (int a[], int n);
int array_avg (int a[], int n);
int main ()
{
    int a[5], i, sum, avg;
    for (i=0; i<5; i++){
    scanf ("%d", &a[i]);
}
sum = array_sum(a, 5);
printf ("%d", sum);
avg = array_avg(a, 5);
printf ("\n%d", avg);
return 0;
}
int array_sum (int a[], int n){
    int sum=0, i;
    for (i=0; i<n; i++){
        sum= sum+a[i];
    }
        return sum;

}
int array_avg (int a[], int n){
    int i, sum=0, avg;
    for (i=0; i<n; i++){
        sum= sum+a[i];
    }
    avg= sum/n;
    return avg;
}