Swap X and Y Values

Make a label 2, textbox 2 and CommandButton 1, and you design like the image below

Option Explicit

Sub Tukar(ByRef x As Single, ByRef y As Single)

Dim Temp As Single

Temp = x

x = y

y = Temp

End Sub

Private Sub cmdTukar_click()

Dim x As Single, y As Single

x = TxtX.Text: y = TxtY.Text

Tukar x, y

TxtX.Text = x: TxtY.Text = y

End Sub

Download Fromnya