# 
# file format:
#
#    card number
#    card type
#    holder's name
#    credit limit
#    initial balance
#
123456
ordinary
John Smith
1000.00
234.56

234567
ordinary
Betty Jones
5000.00
100.00

345678
reward
Andrew Pike
25000.00
3456.33

456789
ordinary
Susan Fish
500.00
321.99