Beginner questions. prevent unhalted exception
I am really in the most beginner stage you can imagine though I have been messing around with other languages before so I know some stuff. I want to effectively use a beginner friendly option to prevent any other input but "y" or "n" to be accepted, which works fine, however null **values, CTRL + Z will still cause error.** Any advice without introducing classes, preferable a control flow based solution to prevent this null; (CTRL + Z ABORT) from breaking it? Here is my code: https://onecompiler.com/csharp/42qqt9jk5
