CODEWITHSUNDEEP
vb.netvariablesfor-loopmono
Mohammed Kandeel
Mohammed Kandeel

Reputation: 21

What will happen when you put variable as counter in a for statement?

Can anyone tell the value of counter at each iteration?

Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim x As Integer
        For x = 1 To 10 Step (x)
            x = x + 1
            MsgBox(x)
        Next
    End Sub

End Class

Upvotes: 0

Views: 64

Answers (2)

Arvindsinc2
Arvindsinc2

Reputation: 716

The iterations will be:

x=2

x=4

x=6

x=8

x=10

But how?

For the first time when you execute a loop the value will be x=1.

Later inside the loop the value of x becomes x=x+1 ie x=2.

Now this value is used as step so your code takes steps of size 2.

In VB once the size of a step is calculated it is not recalculated. For example here in the second iteration the value becomes x=4 that doesn't mean it will now take a step size 4. It will use previously calculated value ie 2.

Proof

Upvotes: 3

John
John

Reputation: 182

2-11 - Step(x) is evaluated when first called. (I'm right, yes - do I get a cookie?)

Upvotes: 1

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