Private Sub Command1_Click()
Sum = 0
i = Text1.Text
j = Text2.Text
For n = i To j Step 1
Sum = Sum + n
Next n
Text3.Text = Sum
End Sub
Private Sub Command2_Click()
End
End Sub
Private Sub Command3_Click()
Text1.Text = ""
Text2.Text = ""
Text3.Text = “”
End Sub