Tables

• Rows of different-typed fields
• Often implemented as arrays of structures
  static struct tok icmp2str[] = {
      { ICMP_ECHOREPLY,       "echo reply" },
      { ICMP_SOURCEQUENCH,    "source quench" },
      { ICMP_ECHO,            "echo request" },
      [...]
      { 0,                NULL }
  };
  
• Can be accessed using a pointer (type-safe)
  static struct user {
          uid_t uid;
          char *name;
          daddr_t space;
          long count;
          daddr_t spc30;
          daddr_t spc60;
          daddr_t spc90;
  } *users;
  
  /* [...] */
  
          struct user *usr, *usrs;
  
          for (usr = usrs, n = nusers; --n >= 0 && usr->count; usr++) {
                  printf("%5ld", (long)SIZE(usr->space));
                  if (count)
                          printf("\t%5ld", (long)usr->count);
                  printf("\t%-8s", usr->name);
                  if (unused)
                          printf("\t%5ld\t%5ld\t%5ld",
                              SIZE(usr->spc30), SIZE(usr->spc60),
                              SIZE(usr->spc90));
                  printf("\n");
          }
          free(usrs);
  }
  
• Accessing with an integer index is not type safe (why?)

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 Last change: Friday, March 26, 2004 5:52 pm
 Unless otherwise expressly stated, all original material on this page created by Diomidis Spinellis is licensed under a Creative Commons Attribution-Share Alike 3.0 Greece License.