need help with a program

This program gives you the option of picking 3 different rental cars. Jeep Wrangler which cost $55 per day, Grand Cherokee which cost $85 per day, and a Land Rover which cost $125 dollars per day. You also have an option to refill the gas for $52. The program needs to calculate the total cost.

here my code, but its didnt work:

vb Code:

Private Sub Command1_Click()
Dim sngWrangler As Single, sngGrand As Single
Dim sngTotal As Single, sngRover, sngDays As Single
 
'assighn the variables
sngDays = cboDays.Text
'make calculations
sngTotal = (sngWrangler * sngDays) + (sngGrand * sngDays) + (sngRover * sngDays)
'display the results on the screen
lblTotal.Caption = sngTotal
 
End Sub
 
Private Sub Form_Load()
cboDays.AddItem 1
cboDays.AddItem 2
cboDays.AddItem 3
cboDays.AddItem 4
cboDays.AddItem 5
cboDays.AddItem 6
cboDays.AddItem 7
 
End Sub
 
Private Sub optRover_Click()
If optRover.Value = True Then
    sngRover = 125
Else
    sngRover = 0
End If
End Sub
 
Private Sub optWrangler_Click()
If optWrangler.Value = True Then
    sngWrangler = 55
Else
    sngWrangler = 0
End If
End Sub
 
Private Sub optGrand_Click()
If optGrand.Value = True Then
    sngGrand = 85
Else
    sngGrand = 0
End If
End Sub
 
Private Sub chkGas_Click()
 
If chkGas.Value = 1 Then
    sngGas = 52
Else
    sngGas = 0
End If
 
lblTotal.Caption = ""
End Sub

Are you getting any particular error?

You did declare the Single Variables in the Sub Command1_Click although you need them in the whole programm, put the declaration in the General Section (just below "Option Explicit") . also you are missing the declaration of sngGas and sngRover isn't declared correctly!

i fixed the problems you mentioned but the total still displays 0.

Number one problem is that you are declaring your variables at the event level. sngRover, sngWrangler etc are only available to the Command1_Click event.

They mean nothing whatsoever to any of the option button click events.

Remove those variable declarations from the button's click event and place them as Private in the Form's declaration section. This will make these variables available to EVERYTHING on the form.

And the first line of EVERY code window in VB should be Option Explicit. Then you won't have those problerms.

thanks guys its workin now

One last thing....sngRover is not a Single, it is a Variant. You should change your declares to include sngRover As Single.

Also, if you consider this resolved, would you please pull down the Thread Tools menu and click the Mark Thread Resolved menu item? That will let everyone know that you have your answer.

Thank you. :)