/* ex6-218-3.c */

#include <stdio.h>

void avg_sum(float a[], int n, float *avg, float *sum);

main()
{
 float b[] = {1.0, 2.0, 3.0, 4.0, 5.0, 6.0};
 float average, total;

 avg_sum(b, 6, &average, &total);  /* Remember how pointer are called? */

 printf("The average is %.2f\n", average);
 printf("The total is %.2f\n", total);

 return 0;
}

void avg_sum(float a[], int n, float *avg, float *sum)
{
  int i;

  sum = 0.0;
  for ( i = 0; i<n; i++)
       sum += a[i];
  avg = sum / n;
}