also ich bin gerade dabei c++ zu lernen.
Jetzt habe ich mich mal an einem Taschenrechner versucht, soweit hat auch alles geklappt nur hab ich noch folgende Probleme:
1. Die ( ) Funktion geht nicht.
2. Wenn man in den Taschenrechner eine Zahl eingibt und dann ein Rechenoperator Auswählt verschwindet diese.
Ich hätte es aber gern so, dass in der TextBox 1+1 steht.
3. Die Funktion % Funktioniert noch nicht.
Hier wäre mein Code, würde mich über Hilfe freuen.
Code:
Option Explicit On
Public Class Form1
Dim X As Double
Dim FirstNumber As Single
Dim SecondNumber As Single
Dim AnswerNumber As String
Dim ArithmeticProcess As String
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
Try
X = Convert.ToDouble(TextBox1.Text)
Catch ex As Exception
TextBox1.Text = ""
X = 0
End Try
End Sub
Private Sub Button14_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button14.Click
TextBox1.Text = Math.Ceiling(X)
End Sub
Private Sub Button15_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button15.Click
TextBox1.Text = Math.Floor(X)
End Sub
Private Sub Button16_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button16.Click
TextBox1.Text = Math.Round(X)
End Sub
Private Sub Button17_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button17.Click
TextBox1.Text = Math.Truncate(X)
End Sub
Private Sub Button13_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button13.Click
TextBox1.Text = ""
End Sub
Private Sub Button12_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button12.Click
TextBox1.Text = TextBox1.Text.Substring(0, TextBox1.Text.Length - 1)
End Sub
Private Sub Button18_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button18.Click
TextBox1.Text = X * -1.0
End Sub
Private Sub Button19_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button19.Click
TextBox1.Text = 1.0 / X
End Sub
Private Sub Button20_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button20.Click
TextBox1.Text = Math.PI
End Sub
Private Sub Button21_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button21.Click
TextBox1.Text = Math.E
End Sub
Private Sub Button10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button10.Click
TextBox1.Text = TextBox1.Text & "0"
End Sub
Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click
TextBox1.Text = TextBox1.Text & "1"
End Sub
Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click
TextBox1.Text = TextBox1.Text & "2"
End Sub
Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button9.Click
TextBox1.Text = TextBox1.Text & "3"
End Sub
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
TextBox1.Text = TextBox1.Text & "4"
End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
TextBox1.Text = TextBox1.Text & "5"
End Sub
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
TextBox1.Text = TextBox1.Text & "6"
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox1.Text = TextBox1.Text & "7"
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
TextBox1.Text = TextBox1.Text & "8"
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
TextBox1.Text = TextBox1.Text & "9"
End Sub
Private Sub Button22_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button22.Click
TextBox1.Text = Math.Sqrt(X)
End Sub
Private Sub Button23_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button23.Click
TextBox1.Text = X / X * X
End Sub
Private Sub Button11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button11.Click
TextBox1.Text = TextBox1.Text & "."
End Sub
Private Sub Button24_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button24.Click
FirstNumber = Val(TextBox1.Text)
TextBox1.Text = ""
ArithmeticProcess = "+"
End Sub
Private Sub Button25_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button25.Click
FirstNumber = Val(TextBox1.Text)
TextBox1.Text = ""
ArithmeticProcess = "-"
End Sub
Private Sub Button26_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button26.Click
FirstNumber = Val(TextBox1.Text)
TextBox1.Text = ""
ArithmeticProcess = "*"
End Sub
Private Sub Button27_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button27.Click
FirstNumber = Val(TextBox1.Text)
TextBox1.Text = TextBox1.Text & "/"
ArithmeticProcess = "/"
End Sub
Private Sub Button29_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button29.Click
TextBox1.Text = TextBox1.Text & "("
End Sub
Private Sub Button30_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button30.Click
TextBox1.Text = TextBox1.Text & ")"
End Sub
Private Sub Button28_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button28.Click
SecondNumber = (TextBox1.Text)
If ArithmeticProcess = "+" Then
ArithmeticProcess = FirstNumber + SecondNumber
ElseIf ArithmeticProcess = "-" Then
ArithmeticProcess = FirstNumber - SecondNumber
ElseIf ArithmeticProcess = "*" Then
ArithmeticProcess = FirstNumber * SecondNumber
ElseIf ArithmeticProcess = "/" Then
ArithmeticProcess = FirstNumber / SecondNumber
End If
TextBox1.Text = ArithmeticProcess
End Sub
End Class
