#define MAX_NUMS 10

int Average(int input_values[MAX_NUMS]);

main()
{
  int index;               /* Loop iteration variable  */
  int numbers[MAX_NUMS];   /* Original input numbers   */
  int mean;                /* average of numbers       */

  /* Get input */
  printf("Enter %d numbers.\n", MAX_NUMS);
  for (index = 0; index < MAX_NUMS; index++) {
    printf("Input number %d : ", index);
    scanf("%d", &numbers[index]);
  }

  mean = Average(numbers);

  printf("The average of these numbers is %d\n", mean);
}

int Average(int inputValues[MAX_NUMS])
{
  int index;
  int sum = 0;

  for (index = 0; index < MAX_NUMS; index++) {
    sum = sum + inputValues[index];
  }

  return (sum / MAX_NUMS);
}