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

typedef int (*compfn)(const void*, const void*);

struct numbers { int  number;

              };

struct numbers array[10]  = { {  1 },
                             {  5 },
                             {  8 },
                             {  4 },
                             {  3 },
                             {  9 },
                             {  2 },
                             {  6 },
                             { 10 },
                             {  7 } };

void printarray(void);
int  compare(struct numbers *, struct numbers *);

void main(void)
{
	char sign;
	while(1)
	{
   printf("Lista przed sortowaniem:\n");
   printarray();

   qsort((void *) &array,
   10,
   sizeof(struct numbers),
   (compfn)compare );

   printf("\nLista po sortowaniu:\n");
   printarray();
   sign=scanf("%c",&sign);
   if(sign=='z')
   {
		break;
   }
	}

}

int compare(struct numbers *elem1, struct numbers *elem2)
{
   if ( elem1->number < elem2->number)
      return -1;

   else if (elem1->number > elem2->number)
      return 1;

   else
      return 0;
}

void printarray(void)
{
   int i;

   for (i = 0; i < 10; i++)
      printf("%d:  Liczba %d to \n",
               i+1, array[i].number);
}