Dim x As Currency, y As Currency, z As Currency, znak As Integer, Dim Operator_Entered As Boolean
Private Sub Command1_Click()

Text1.Text = Text1.Text + "1"
End Sub

Private Sub Command10_Click()
Text1.Text = Text1.Text + "0"
End Sub

Private Sub Command11_Click()
Text1.Text = Text1.Text + "/"
End Sub

Private Sub Command18_Click()
x = o
y = 0
z = 0
znak = o
Text1.Text = ""
End Sub

Private Sub Command2_Click()
Text1.Text = Text1.Text + "2"
End Sub
Private Sub Command3_Click()
Text1.Text = Text1.Text + "3"
End Sub
Private Sub Command4_Click()
Text1.Text = Text1.Text + "4"
End Sub

Private Sub Command5_Click()
Text1.Text = Text1.Text + "5"
End Sub

Private Sub Command6_Click()
Text1.Text = Text1.Text + "6"
End Sub
Private Sub Command7_Click()
Text1.Text = Text1.Text + "7"
End Sub
Private Sub Command8_Click()
Text1.Text = Text1.Text + "8"
End Sub
Private Sub Command9_Click()
Text1.Text = Text1.Text + "9"
End Sub




Private Sub Command12_Click()
z = Text1.Text
z = z * (-1)
Text1.Text = z
End Sub

Private Sub Command13_Click()
x = Text1.Text
Text1.Text = ""
znak = 1
if Operator_Entered Then Command17_Click()
Operator_Entered = true
End Sub

Private Sub Command14_Click()
x = Text1.Text
Text1.Text = ""
znak = 2
if Operator_Entered Then Command17_Click()
Operator_Entered = true
End Sub

Private Sub Command15_Click()
x = Text1.Text
Text1.Text = ""
znak = 3
if Operator_Entered Then Command17_Click()
Operator_Entered = true
End Sub

Private Sub Command16_Click()
x = Text1.Text
Text1.Text = ""
znak = 4
if Operator_Entered Then Command17_Click()
Operator_Entered = true
End Sub

Private Sub Command17_Click()
y = Text1.Text
If znak = 1 Then z = x + y
If znak = 2 Then z = x - y
If znak = 3 Then z = x * y
If znak = 4 Then z = x / y

Text1.Text = z

End Sub