Sample Application

• The result should be zero, but sometimes it is not
• Normally, the program output looks somewhat like this:

  Depositing 100.0, new balance is 100.0
  Withdrawing 100.0, new balance is 0.0
  Depositing 100.0, new balance is 100.0
  Depositing 100.0, new balance is 200.0
  Withdrawing 100.0, new balance is 100.0
  . . .
  Withdrawing 100.0, new balance is 0.0

• But sometimes you may notice messed-up output, like this:

  Depositing 100.0Withdrawing 100.0, new balance is 100.0, new balance is -100.0