Count Total Days in the two days range in a year

I need to count the total days between the date ranges specified in a given year.

alter procedure test @year varchar(10)

as begin

declare @Acount int

Declare @StartDate varchar(20)

Declare @EndDate Varchar(20)

set @StartDate='2014-08-09'

set @EndDate='2014-08-19'

set @Acount=0

if(((YEAR(@StartDate))=@year)and((YEAR(@EndDate))=@year))

SET @ACOUNT=@ACOUNT+CONVERT(INT,(SELECT

(DATEDIFF(dd, @StartDate, @EndDate) + 1)

-(DATEDIFF(wk, @StartDate, @EndDate) * 2)))

print @StartDate

print @Enddate

print @Acount

End

Here i am getting the @Acount as 7 but the Difference between them is 11. I hope so the saturdays and sundays are excluding from them .

But i need the total All days .How to do .