Under Powershell, it displays the calculator menu, then is non-responsive except to Control-C. Under Command Prompt, it runs, but it requires typing in ENTER key more than should be necessary. At least it does run. How can this be run inside Visual Studio 2022, so can mix and match with C# code? This would be a good starter application. Let's focus on calculator first before moving on to something more complex. I would like to improve `calculator` project so that it has a nicer console feel, and to display the stack. I will review the dotnet documentation. Brother Bill