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From: sklee@pompeii.SRC.Honeywell.COM (Sungkee Lee)
Newsgroups: comp.lang.c
Subject: register variable???
Message-ID: <30585@srcsip.UUCP>
Date: 8 Sep 89 16:35:32 GMT
Sender: news@src.honeywell.COM
Reply-To: sklee@srcsip.UUCP ()
Organization: Honeywell Systems & Research Center, MPLS, MN
Lines: 28

#include <stdio.h>
  int  list[5] = {0, 1, 2, 3, 4};

main()
{
  register int  i;

  printf("list = %d %d %d %d %d\n",
	 list[0], list[1], list[2], list[3], list[4]);
  i = 0;
  while (i < 4)  list[i] = list[++i];
  printf("list = %d %d %d %d %d\n",
	 list[0], list[1], list[2], list[3], list[4]);
}
  
Above program gave me the result,

list = 0 1 2 3 4
list = 0 1 2 3 4.

However, if I define "int i" instead of "register int i",
the result is

list = 0 1 2 3 4
list = 1 2 3 4 4.

Is this the way register variable is designed?
Or, is this compiler error? I ran this program on Sun 3/60?