Msquare is right, this is exactly what we are trying to build.
Happy to help - but what is the question? A programming issue? A wiring issue?
BTW - use the Preview button and the "#" button so you can work out how to show program code in your posts
OK here are some answers. Just like in Jeopardy - what is the question
// : and so on
But really you should use an array.
Buttons should be wired between the Arduino pin and Ground. The input pin (and it can be any except 13) is then initialised with