Public Class Form1 Sub Comparacion() Dim edad As Integer Dim etapa As String edad = 4 If edad < 5 Then etapa = "niñes" MsgBox(etapa) ElseIf edad < 14 Then etapa = "adolecente" MsgBox(etapa) ElseIf edad < 25 Then etapa = "juventud" MsgBox(etapa) ElseIf edad < 40 Then etapa = "adultez" MsgBox(etapa) Else etapa = "vejez" MsgBox(etapa) End If End Sub Private Sub btnIfElse01_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Call Comparacion() End Sub Private Sub btnIfElse02_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click Call Comparacion() End Sub Private Sub btnIfElse03_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click Call Comparacion() End Sub Private Sub btnSelectCase_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Dim edad As Integer Dim etapa As String edad = 4 Select Case edad Case Is < 5 etapa = "niñes" MsgBox(etapa) Case Is < 14 etapa = "adolecente" MsgBox(etapa) Case Is < 25 etapa = "juventud" MsgBox(etapa) Case Is < 40 etapa = "adultez" MsgBox(etapa) Case Else etapa = "vejez" MsgBox(etapa) End Select End Sub Private Sub btnFor_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim x As Integer For x = 1 To 10 Step 1 MsgBox(2 * x) Next End Sub Private Sub btnDoWhile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click Dim x As Integer x = 1 Do While x <= 10 MsgBox(2 * x) x = x + 1 Loop End Sub Private Sub btnDoUntil_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click Dim x As Integer x = 1 Do Until x > 10 MsgBox(2 * x) x = x + 1 Loop End Sub End Class