#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define SIZE 10

int main(void)
{
      double fa[SIZE], *fp1, *fp2,sum=0;
      int i = 0;
 
      srand(time(NULL));

      for(i=0; i<SIZE; i++)
      {
        fa[i] = ((double)rand()/(double)RAND_MAX)*100;
        printf("Random number: %f\n", fa[i]);
        sum += fa[i];
      }
      printf("Mean = %f\n",sum/SIZE);      

      i=0;
      fp1 = &fa[0];
      fp2 = fa; 
      while(fp2 != &fa[SIZE])
      {
        printf("Difference fa[%d]-fa[%d] = %f\n", i,0,(*fp2-*fp1));
        fp2++;
        i++;
      }
      return(0);
}