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+/* Searching and Sorting Example
+   Copyright (C) 1991-2017 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; either version 2
+   of the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+/* Define an array of critters to sort. */
+
+struct critter
+  {
+    const char *name;
+    const char *species;
+  };
+
+struct critter muppets[] =
+  {
+    {"Kermit", "frog"},
+    {"Piggy", "pig"},
+    {"Gonzo", "whatever"},
+    {"Fozzie", "bear"},
+    {"Sam", "eagle"},
+    {"Robin", "frog"},
+    {"Animal", "animal"},
+    {"Camilla", "chicken"},
+    {"Sweetums", "monster"},
+    {"Dr. Strangepork", "pig"},
+    {"Link Hogthrob", "pig"},
+    {"Zoot", "human"},
+    {"Dr. Bunsen Honeydew", "human"},
+    {"Beaker", "human"},
+    {"Swedish Chef", "human"}
+  };
+
+int count = sizeof (muppets) / sizeof (struct critter);
+
+
+
+/* This is the comparison function used for sorting and searching. */
+
+int
+critter_cmp (const void *v1, const void *v2)
+{
+  const struct critter *c1 = v1;
+  const struct critter *c2 = v2;
+
+  return strcmp (c1->name, c2->name);
+}
+
+
+/* Print information about a critter. */
+
+void
+print_critter (const struct critter *c)
+{
+  printf ("%s, the %s\n", c->name, c->species);
+}
+
+
+/*@group*/
+/* Do the lookup into the sorted array. */
+
+void
+find_critter (const char *name)
+{
+  struct critter target, *result;
+  target.name = name;
+  result = bsearch (&target, muppets, count, sizeof (struct critter),
+		    critter_cmp);
+  if (result)
+    print_critter (result);
+  else
+    printf ("Couldn't find %s.\n", name);
+}
+/*@end group*/
+
+/* Main program. */
+
+int
+main (void)
+{
+  int i;
+
+  for (i = 0; i < count; i++)
+    print_critter (&muppets[i]);
+  printf ("\n");
+
+  qsort (muppets, count, sizeof (struct critter), critter_cmp);
+
+  for (i = 0; i < count; i++)
+    print_critter (&muppets[i]);
+  printf ("\n");
+
+  find_critter ("Kermit");
+  find_critter ("Gonzo");
+  find_critter ("Janice");
+
+  return 0;
+}