Desperate need of error checking

[dliu04]

Right now, the program does not even check for the following:

1. If splitting by dollar amount, if the amount being paid by participants exceed the actual amount that needs to be paid 1a. For example, if we need to split $500 and John Cena pays one million. There's no error checking for that.
2. If multiple people are paying, the program does not even check if their combined amount exceeds what actually needs to be paid 2a. For example, if we bought a new arcade machine for $500 and Dylan and Brendon paid for it. Dylan could pay one million and Brendon could pay the amount Google was fined by Russia. The program needs to have error checking for this.
3. There's also a slew of other issues that takes one drunk orangutan to tinker around and find bugs in the program. We need to start implementing bug fixes after feature sets are complete.

[tranbren]

I agree for my auto-bill calculation there are already error checks where it can't over 100 for percentage and over the total amount for dollar type.

[dliu04]

New error checking guidelines:

• Make sure that people who paid are automatically members of the bill as well
• Make sure people don't get included twice in either section