Integers are not adding / subtracting

Question

I am reading some data from a Database and the value in question is a Date and Time Stamp.

To keep things short the Data is similar to this. 7/24/2015 16:13:58

I then extract the Date only like this.

$ScanDate = $($Row[3]).ToString()
        [String]$Scan = $ScanDate.SubString(0,10)

I then split the $ScanDate into an Array

$Scan.Split('/')

Then i change the Value to an Integer for each Day, Month and Year

[int]$ScanMonth = $Scan[0]
[int]$ScanDay = $Scan[1]
[int]$ScanYear = $Scan[2]

Check they are Integers..

$ScanDay.GetType()
$ScanYear.GetType()
$ScanMonth.GetType()

Returns..

IsPublic IsSerial Name                                     BaseType
-------- -------- ----                                     --------
True     True     Int32                                    System.ValueType
True     True     Int32                                    System.ValueType
True     True     Int32                                    System.ValueType

The issue is when i try and add and subtract those Integers, I am getting the wrong result?

$Total = [int]$ScanDay + [int]$ScanMonth
Write-Host $Total

So the values 24 + 7 come out as 102 not 31.

What am i missing? Any help appreciated :)

Updated

Ok so i wanted to add the final compare code..After being told the Database value was interpreted by powershell as a Datetime I could do everything like this.

$Date = Get-Date
$Date = $Date.ToUniversalTime()

$DayDifference = New-TimeSpan -Start $Date -End $Row[3]
if ($DayDifference.TotalDays -gt 5) { 'Do Something' }

Answer 1

$scan = "7/24/2015 16:13:58"
$scan = $scan.Split('/');
[int]$ScanMonth = $Scan[0]
[int]$ScanDay = $Scan[1]
[int]$ScanYear = ($Scan[2].Split())[0]

$Total = [int]$ScanDay + [int]$ScanMonth
Write-Host $Total

Then you'll get 31.. Although I still think you should be using DateTime object

Update : An easier way to solve your actual problem:

$scan = "7/24/2015 16:13:58"
$scanDate = [DateTime]$scan
$date = (get-date).addDays(-5)
if($date -lt $scanDate) {'Do Something'}