garray.c
========

#include <stdio.h>
#define	CLASS_SIZE	5
main()
{
  int	i,j, score[CLASS_SIZE], sum = 0, temp;
  printf("Input %d scores: ", CLASS_SIZE);
  for (i = 0; i < CLASS_SIZE; ++i) {
	scanf("%d", &score[i]);
	sum +=score[i];
  }
  for (i = 0; i < CLASS_SIZE - 1; ++i)  /* bubble sort */
    for (j = CLASS_SIZE -1; j > i; --j)
	if (score[j-1] < score[j]) {  /* check the order */
	   temp = score[j-1];
	   score[j-1] = score[j];
	   score[j] = temp;
	}
  printf("\nOrdered scores:\n");
  for (i = 0; i < CLASS_SIZE; ++i)
	printf("   score[%d] = %5d\n", i , score[i]);
  printf("%18d%s\n%18.1f%s\n\n",
	sum, " is the sum of all the scores",
	(double) sum / CLASS_SIZE, " is the class average");
}

Output:

Input 5 scores:   63  88    97   53  77

Ordered scores:
   score[0] =    97
   score[1] =    88
   score[2] =    77
   score[3] =    63
   score[4] =    53
               378 is the sum of all the scores
              75.6 is the class average