# Learn Smile with Lottery Example
# Objective
We will build a simple Lottery application. A Lottery application has the following requirements:
- An user can create a new lottery game
- An user can add participants
- condition: a participant can only be added once
- condition: a participant can only be added if a winner is not yet selected
- An user can remove a participant
- condition: if a winner is not yet selected
- An user can run the lottery which will select a winner
- condition: we can only select a winner if there is at least one participant
- condition: we can only select a winner once, afterwards an error is produced when trying to select a new winner
# Scope
Will develop this project in four phases, each phase is complete on its own, but as we progress, new features of Smile will get introduced, and will discover how easily it can be achieved.