Test-DefaultParameters.ps1

function Test-DefaultParameters {
    [cmdletbinding()]
    param(
        [parameter(Position = 0)]
        [ValidateScript({ Test-Path -Path $_ })]
        [Alias('PSPath')]
        [string]
        $Path = (Read-Host -Prompt 'Enter the location of the folder'),

        [parameter(Position = 1)]
        [ValidateRange(1, 10)]
        [Alias('RandomNumber')]
        [int]
        $Number = (Read-Host -Prompt 'Enter a number from 1 to 10'),

        [parameter(Position = 2)]
        [ValidateSet('Set1', 'Set2', 'Set3')]
        [Alias('Option', 'Choose')]
        [string]
        $Set = (Read-Host -Prompt 'Choose a set of Set1, Set2, or Set3')
    )

    process {
        [PSCustomObject]@{
            Path = $Path
            Number = $Number
            Set = $Set
        }
    }
}