How can I make an error message pop up for a user?

[Can't do Macros]

I have a sheet with a list of employees that has percentages listed in 4
columns out from their name. How can I get an error message to pop up for
any row that doesn't equal 100% when you add up the 4 columns in each row?
Therefore, I want the macro to loop around so that it goes down the sheet
summing the 4 columns for each employee and an error message will pop when it
hits a row that doesn't equal 100%.

 

[RB Smissaert]

Something like this should do the job:

Sub test()

Dim i As Long
Dim LR As Long
Dim arr

LR = Cells(65536, 1).End(xlUp).Row

arr = Range(Cells(1), Cells(LR, 4))

For i = 1 To UBound(arr)
If arr(i, 1) + arr(i, 2) + arr(i, 3) + arr(i, 4) <> 1 Then
Range(Cells(i, 1), Cells(i, 4)).Select
MsgBox "row " & i & " (the selected range) does not add up to 100%!",
_
vbCritical, "checking row sums"
End If
Next i

End Sub


RBS

 

[Can''t do Macros]

Thanks for your help. I entered the code you gave me, but I get an error
message for the line that says vbCritical, "checking row sums"
The error message I get is: Compile error: Invalid use of property.

Do you have any tips for getting rid of this error message?

Thanks again!

 

[RB Smissaert]

Probably the linebreaks messing things up.
Put your cursor after:
100%!",
and press the Dell key a few times till you got vbCritical right after the
above.
Then try again.

RBS