Thread: qucik sort

in this quick sort code what is the int *pItem for?
when it's compiled it gives an unreferenced local variable warning.
just confused....

Code:

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

int compare (const void * a, const void * b)
{
  return ( *(int*)a - *(int*)b );
}

int main ()
{
  int values[] = { 40, 10, 100, 90, 20, 25 };
  int * pItem;
  int n;
  qsort (values, 6, sizeof(int), compare);
  for (n=0; n<6; n++)
  {
    printf ("%d ",values[n]);
  }
  return 0;
}

it's because you aren't using int * pItem; delete this and it wont give you warning

I figured. It's just that they had it in the example here. I thought there must be some reason why they stuck it in there and that's what confused me....

Thanks...