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

long int random();
void srandom(unsigned int);

int arr[100];
int narr;

int cmp(const void *x, const void *y)
{
	int *px, *py;
	px = (int *) x;
	py = (int *) y;

	return(*px - *py);
}


int main(void)
{
	int i;


	/* initialize the PRNG */
	(void) srandom(time(NULL));

	/* need at least 9 but no more than 100 numbers */
	narr = random() % 90 + 11;

	/* generate the numbers */
	for(i = 0; i < narr; i++)
		arr[i] = random() % 100;

	/* print them out */
	printf("UNSORTED:\n");
	for(i = 0; i < narr; i++)
		printf("%d ", arr[i]);
	putchar('\n');

	/* sort them */
	qsort(arr, narr, sizeof(int),
		(int (*)(const void *, const void *) ) cmp);

	/* print them out */
	printf("SORTED:\n");
	for(i = 0; i < narr; i++)
		printf("%d ", arr[i]);
	putchar('\n');

	/* bye! */
	return(0);
}