stdlib/testsort.c

   1 #include <ansidecl.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <stdio.h>
   5
   6 int
   7 DEFUN(compare, (a, b), CONST PTR a AND CONST PTR b)
   8 {
   9   return strcmp (*(char **) a, *(char **) b);
  10 }
  11
  12
  13 int
  14 DEFUN_VOID(main)
  15 {
  16   char bufs[500][20];
  17   char *lines[500];
  18   size_t lens[500];
  19   size_t i, j;
  20
  21   srandom (1);
  22
  23   for (i = 0; i < 500; ++i)
  24     {
  25       lens[i] = random() % 19;
  26       lines[i] = bufs[i];
  27       for (j = 0; j < lens[i]; ++j)
  28         lines[i][j] = random() % 26 + 'a';
  29       lines[i][j] = '\0';
  30     }
  31
  32   qsort (lines, 500, sizeof (char *), compare);
  33
  34   for (i = 0; i < 500 && lines[i] != NULL; ++i)
  35     puts (lines[i]);
  36
  37   return 0;
  38 }