Average of N integers.c

#include<stdio.h>

#define N   (3)

int average(int i) {
    int tmp=0;
    scanf_s("%d", &tmp);
    return (i-1) ? ((tmp / N) + average(i - 1)) : (tmp / N);
}

int main()
{
    printf("Enter %d numbers: ",N);
    printf("Average of %d numbers: %d",N,average(N));
    return 0;
}