C/Pointer/Pointer Double

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
double average(double data[], int count)
{
  int i = 0;
  double sum = 0.0;
  for( i = 0 ; i<count ; sum += data[i++])
    ;
  return sum/count;
}
int main()
{
   double data[3];
   data[0] = 1;
   data[1] = 2;
   data[2] = 3;
   printf("\nThe  average of thew values you entered is %10.2lf\n", average(data, 3));
   free(data);
}

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
int main()
{
  double *values = NULL;     
  double sum = 0.0;          
  int capacity = 5;          
  int i = 0;                 
  values= (double*)malloc((capacity)*sizeof(double));
  if(values == NULL){
     printf("Memory allocation failed. Terminating program.");
  }
  for(i=0;i<capacity;i++){
     values[i] = i;
     printf(" %.2lf",values[i]);
  }
  for(i = 0 ; i<capacity ; i++)
    sum += *(values+i);
  /* Output the average */
  printf("\n The average of the the values you entered is %.2lf.\n", sum/capacity);
  free(values);     /* We are done - so free the memory */
}