start and stop the Calc process

to start and stop the Calc process and then detects processes that have stopped

PS> calc <---- start the Calc process

PS> $p = get-process calc <---- get an object and store it

PS> stop-process -inputobject $p <----- stop the Calc process

PS> get-process | where-object {$_.HasExited}

` HasExited ` is a property of process object. Because the Calc process has been stopped, the value of HasExited property is TRUE, so there is no output.