[RESOLVED] how to use regex or an array to display some output from an arithmetic input?

Hi guys!! :wave: I've to make a program that reads an arithmetical sentence from a textbox, e.g 12.3*34+4*5-3 and then on another textbox identify and display what is the content of the first textbox, for example taking the last ex:

If I have this input:
12.3*34+4*5-3

The output should look like this:

<number>12.3
<operator> *
<number> 34
<operator> +
<number> 4
<operator> *
<number> 5
<operator> -
<number> 3

This program should only read this operators like (+,-,*,/).

I'm have in mind 2 ways of doing it, one with regex and the other taking the first sentence, put it on an array, then trim it, and somehow get the values of the array and identify if it is a number or a decimal number and if it's an operator and then display it.

The difficult part or the part that i can't conceptualize :confused: is how to implement it with regex (it should be easier with a regex format than storing it on a array).

I write a bit of code, :D I used an array to store and then to print the numbers and I used the split function to separate the math operator, but I dunno how to print the operators and the tags.

vb Code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim Sentencia As String = TextBox1.Text
        Dim i As Integer
        Dim arryTextBox() As String
 
        TextBox2.Clear()
 
        arryTextBox = Sentencia.Split("+", "-", "*", "/")
 
        For i = 0 To UBound(arryTextBox)
 
            Dim Array As String = arryTextBox(i)
 
            'MsgBox(arryTextBox(i)) 'this msgbox works it prints the values of the array
            TextBox2.Text = TextBox2.Text & Array & vbCrLf
        Next i
        
    End Sub

Btw, I also have the code to validate the input on the textbox ::wink::

Any help will be very appreciated,

Thanks in advanced!!

vb.net Code:

If Me.txtEquation.Text <> String.Empty Then
    Me.txtSeperated.Text = "<number> "
 
    For Each EquChar In Me.txtEquation.Text
        Dim OperatorMatch As Match = Regex.Match(EquChar, "(\+|-|\*|/)")
 
        If OperatorMatch.Success Then
            Me.txtSeperated.Text &= vbCrLf & "<operator> "
        End If
        Me.txtSeperated.Text &= EquChar
        If OperatorMatch.Success Then
            Me.txtSeperated.Text &= vbCrLf & "<number> "
        End If
    Next
End If

Put this in your button click event; this probably isn't the best way to solve your problem, but it works.

Also, you shouldn't use "Array" as a variable name as it is also a Class and doing so could produce errors.

OMG WOW!! Thank so much man!! I'll have to study a lot about regex functions. You made my day!!

Thanks for ur advice, i wont write that again ^^

A+++++

Thanks again!!