#include <stdio.h>

// int *arr, int arr[], int arr[5] are the same
int getMean(int *arr, int len);

int main() {
  int data[5] = {78, 14, 99, 27, 16};

  //*(data+1);
  //printf("%d\n",data[-1]);

  int avg = getMean(data, 5);
  printf("The average data value was: %d.\n", avg);
   return 0;
}

int getMean(int arr[], int len)
{
	int i, mean = 0;
    for (i=0; i < len; i++)
    	mean += arr[i];
    mean = mean / len;
  	return mean;
}