#include<stdio.h>

int main()
 {
   int i, scores[8], sum = 0, total;
   float average;

printf("How big is the array?");
scanf("%d",&total);
scores=(int*)malloc(sizeof(int)*total);

   for(i=0;i<total;i++)
{
   printf("Enter Test Score %d/%d: ",(i+1),total);
   scanf("%d",(scores+i));
}
for(i=0;i<total;i++)
{
sum = sum + *(scores+i);
      // or   scores[i] 
}             
average = sum/total;
    printf("average is: %3.2f\n",average);