Write a visual program to calculate average using runtime textbox

Write a visual program to calculate average using runtime text-box
Design window:-

Code:

Dim t1 As TextBox
Dim t2 As TextBox
Dim t3 As TextBox
Dim t4 As TextBox
Dim a As Integer
Dim b As Integer
Dim c As Integer

Private Sub cmdClear_Click()
t1.Text = ""
t2.Text = ""
t3.Text = ""
t4.Text = ""
t1.SetFocus
End Sub

Private Sub cmdDisplay_Click()
 a = Val(t1.Text)
 b = Val(t2.Text)
 c = Val(t3.Text)
 t4.Text = (a + b + c) / 3
End Sub

Private Sub cmdExit_Click()
Unload Me
End Sub
Private Sub Form_Activate()
    Set t1 = Controls.Add("VB.TextBox", "t1")
    t1.Visible = True
    t1.Height = 600
    t1.Width = 2200
    t1.Top = 100
    t1.Left = 3200
    t1.SetFocus
           
    Set t2 = Controls.Add("VB.TextBox", "t2")
    t2.Visible = True
    t2.Height = 600
    t2.Width = 2200
    t2.Top = 800
    t2.Left = 3200
       
    Set t3 = Controls.Add("VB.TextBox", "t3")
    t3.Visible = True
    t3.Height = 600
    t3.Width = 2200
    t3.Top = 1500
    t3.Left = 3200
       
    Set t4 = Controls.Add("VB.TextBox", "t4")
    t4.Visible = True
    t4.Height = 600
    t4.Width = 2200
    t4.Top = 2200
    t4.Left = 3200
End Sub

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OUTPUT