Programming Fundamentals/Loops/VB.NET

loops.vb

' This program demonstrates While, Do, and For loop counting using
' user-designated Start, stop, and Increment values.
'
' References:
'     https://en.wikibooks.org/wiki/Visual_Basic_.NET

Imports System

Public Module Loops
    Sub Main
        Dim Start As Integer
        Dim Finish As Integer
        Dim Increment As Integer
        
        Start = GetValue("Starting")
        Finish = GetValue("ending")
        Increment = GetValue("Increment")

        WhileLoop(Start, Finish, Increment)
        DoLoop(Start, Finish, Increment)
        ForLoop(Start, Finish, Increment)
    End Sub
    
    Private Function GetValue(Name As String)
        Dim Input as String
        Dim Value As Integer
        
        Console.WriteLine("Enter " & Name & " value:")
        Input = Console.ReadLine()
        Value = Convert.ToInt32(Input)
        Return Value
    End Function
    
    Private Sub WhileLoop(
        Start As Integer, Finish As Integer, Increment As Integer)
        Console.WriteLine("While loop counting from " & Start & " to " & 
            Finish & " by " & Increment & ":")
        Dim Count As Integer
        
        Count = Start
        Do While Count <= Finish
            Console.WriteLine(Count)
            Count = Count + Increment
        Loop
    End Sub
    
    Private Sub DoLoop(
        Start As Integer, Finish As Integer, Increment As Integer)
        Console.WriteLine("Do loop counting from " & Start & " to " & 
            Finish & " by " & Increment & ":")
        Dim Count As Integer
        
        Count = Start
        Do
            Console.WriteLine(Count)
            Count = Count + Increment
        Loop While Count <= Finish
    End Sub
    
    Private Sub ForLoop(
        Start As Integer, Finish As Integer, Increment As Integer)
        Console.WriteLine("For loop counting from " & Start & " to " & 
            Finish & " by " & Increment & ":")
        Dim Count As Integer
        
        For Count = Start To Finish Step Increment
            Console.WriteLine(Count)
        Next
    End Sub
End Module

Try It

Copy and paste the code above into one of the following free online development environments or use your own VB.NET compiler / interpreter / IDE.

• paiza.IO
• TutorialsPoint

See Also

• Wikibooks: Visual Basic .NET

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Programming Fundamentals/Loops