#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define   N   11                             /* size of the array */

enum when {before, after};

typedef   enum when   when;

int    cmp(const void *vp, const void *vq);     /* comparison fct */
void   fill_array(double *a, int n);
void   prn_array(when val, double *a, int n);