Adding default values to the parameter

Sometimes, it is possible to give a parameter in a function a default value. In this case, we do not specify the parameter as a mandatory one (if we do, the function will disregard the default value and prompt for a value anyway).

In this recipe, we will revisit the count function and focus on the default value.

How to do it...

We will use the same script that we did in the Defining parameters recipe, with two small changes in it. Create a PowerShell script file with the following content:

function Start-Count {
    param (
        # The current time, or the starting point
        [Parameter(Mandatory=$false)]
        [Alias("CT", "From")]
        [int]
        $CurrentTime...