vb caption中如何显示运算过程

Question

Private Sub command1_click()
Label5.Caption = "运算结果：" & sum
End Sub
Private Sub HScroll1_Change()
Label3.Caption = HScroll1.Value
i = HScroll1.Value
End Sub

Private Sub Command2_Click()
Form3.Show
Hide
End Sub

Private Sub HScroll2_Change()
Label4.Caption = HScroll2.Value
j = HScroll2.Value
End Sub

Private Sub Option1_Click()
sum = i + j
End Sub

Private Sub Option2_Click()
sum = i - j
End Sub

Private Sub Option3_Click()
sum = i * j
End Sub

Private Sub Option4_Click()
sum = i / j
End Sub

怎么在Label5中显示运算过程？（比如3*5=15这样）
在线等。
https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/whlr1/pic/item/1a9c1147eb5aa32f9213c6ea.jpg

Answer 1

先定义一个窗体变量str，在单选按钮option1-option4的click事件中，用变量str记录运算符号。然后将command1的click事件语句改为一下样式就可以了。
Label5.Caption = "运算结果：" & i & str & j & "=" & sum