double getAverages(int nums[]) {
  double aver = 0.0;
  int i;

  for (i = 0; i < 10; i++) {
    aver += nums[i];
  }
  return aver / 10;
}




int main(void) {

  /* all variables must be declared at the top of a function */
  int i;
  /* we can declare arrays on the stack, as long as we know their size 
     ahead of time */
  int numbers[10]; 
  double ave;

  printf("Enter 10 numbers: ");

  for (i = 0; i <10; i++) {
    /* what's the '&' about? This is how we indicate the address of 
       numbers[i], rather than the value stored there. 
       What about the "%d"? That indicates that we want to read the next
       thing in as an integer. */

    scanf("%d", &numbers[i]);
  }

  /* notice no object or class preceding the function call */
  ave = getAverages(numbers);
  /* %lf indicates that we want to print out ave as a double (long float) */
  printf("average: %lf", ave);

}