title: using qsort() to sort pointers to structs containing strings
body: <p>I'm not sure if this is possible to do with qsort because what I want to sort (array of pointers to struct) is not what I am comparing (strings).</p>
  
  <p>Here is an abridged version of my program (assume that all the student data is in core before we call qsort() and n is the number of records to sort):</p>
  
  <pre><code>struct student {
          char lname[NAMESIZE + 1];
          char fname[NAMESIZE + 1];
          short mid;
          short final;
          short hmwks;
  };
  
  int cmp(const void *, const void *);
  
  int
  main(int argc, char **argv)
  {
          int n;
          struct student *data[MAX];
  
          qsort(data, n, sizeof(struct student *), cmp);
  
          return 0;
  }
  
  int
  cmp(const void *p0, const void *p1)
  {
          return strcmp((*(struct student *) p0).lname,
                        (*(struct student *) p1).lname);
  }
  </code></pre>