Function GetMinMax VB.Net Exercise - Visual Basic Programming Course


 Lesson

Functions

 Exercise

Function GetMinMax

Objetive

Write a Visual Basic (VB.Net) function named "GetMinMax", which will ask the user for a minimum value (a number) and a maximum value (another number). It should be called in a similar way to

GetMinMax( n1, n2);

which would behave like this:
Enter the minimum value: 5
Enter the maximum value: 3.5
Incorrect. Should be 5 or more.
Enter the maximum value: 7

That is: it should ask for the minimum value and then for the maximum. If the maximum is less than the minimum, it must be reentered. It must return both values.

Code

Imports System
Public Class exercise132
    Public Shared Sub GetMinMax(ByRef number1 As Single, ByRef number2 As Single)
        Console.Write("Enter the minimum value: ")
        number1 = Convert.ToSingle(Console.ReadLine())
        Console.Write("Enter the maximum value: ")
        number2 = Convert.ToSingle(Console.ReadLine())

        While number2 < number1
            Console.WriteLine("Incorrect. Should be {0} or more.", number1)
            Console.Write("Enter the maximum value: ")
            number2 = Convert.ToSingle(Console.ReadLine())
        End While
    End Sub

    Private Shared Sub Main(ByVal args As String())
        Dim number1 As Single = 000000000.00F, number2 As Single = 000000000.00F
        GetMinMax(number1, number2)
    End Sub
End Class

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