WHILE LOOP not ending

Can anyone figure out why this WHILE loop never ends.
drop table #temp1
drop table #temp3
create table #temp1(title varchar(50),const int,timestamp datetime)
CREATE TABLE #TEMP3(TITLE VARCHAR(50),const INT,TIMESTAMP DATETIME)

insert into #temp1
values ('MCCainCampaigns1',-101,'21-Aug-2008')
insert into #temp1
values ('MCCainCampaigns2',-101,'21-Aug-2008')
insert into #temp1
values ('MCCainCampaigns3',-101,'21-Aug-2008')
insert into #temp1
values ('MCCainCampaigns4',-101,'21-Aug-2008')
declare @tempstrconst varchar(50)
set @tempstrconst=(select top 1 title from #temp1)
while @@rowcount<>0
begin
update #temp1
set intconst=intconst-1
where title=@tempstrconst

insert into #temp3
select * from #temp1
where title='MysterySeries_Vol1'

delete from #temp1 where title='MysterySeries_Vol1'
set @tempstrconst=(select top 1 title from #temp1)
end
--Desired output:
select * from #temp3
'MCCainCampaigns1',-102,'21-Aug-2008'
'MCCainCampaigns2',-103,'21-Aug-2008'
'MCCainCampaigns3',-104,'21-Aug-2008'
'MCCainCampaigns4',-105,'21-Aug-2008'

Hi,
WHILE loop is running infinite because of SET condition "set @tempstrconst=(select top 1 title from #temp1)". @@ROWCOUNT Returns the number of rows affected by the last statement and after executing "set @tempstrconst=(select top 1 title from #temp1) ", @@ROWCOUT changes to 1 which means TRUE WHILE condition.