[Valmont]

Is this a nice hint?
(observe the details)

#include <iostream>
#include <cstdlib>

using namespace std;

static const int NUM_STRINGS = 4;
int compare(const void* p1, const void* p2);

int main()
{
  char* arr_strs[] = { "test", "hi", "hello", "debug" };

  qsort(arr_strs, 4 , sizeof(char*), compare);

  for(unsigned i = 0; i < NUM_STRINGS; ++i)
  {
    std::cout<<arr_strs[i]<<" "<<std::endl;
  }

  return 0;
}

int compare(const void* p1, const void* p2)
{
  return strcmp(*(char **)p1, *(char **)p2);
}