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

int cmp(const void *a, const void *b) {
  int *ia = (int *)a;
  int *ib = (int *)b;

  return( *ia - *ib );
}


int main(int argc, char *argv[]) {
  int thing[10] = {5, 4, 2, 6, 7, 1, 8, 9, 3, 0};
  int i;

  printf("thing: ");
  for(i=0;i<10;i++) {
    printf("%d ", thing[i]);
  }
  printf("\n");

  qsort(thing, 10, sizeof(int), cmp);

  printf("thing: ");
  for(i=0;i<10;i++) {
    printf("%d ", thing[i]);
  }
  printf("\n");

  return(0);
}