You are in charge of managing a local softball team, one in which there is a lot of turnover. While you have a couple of regulars, much of the team...

You are in charge of managing a local softball team, one in which there is a lot of turnover. While you have a couple of regulars, much of the team members come and go frequently. When it comes to organizing games, it is becoming more and more difficult to keep track of the current members, so you decide to write small program to help you track the current players.