######################################################################
# A flawed change making program
#
# Author: Mario Nakazawa
# username: nakazawam
#
# Purpose: This program has a bunch of problems with that need to be
#   fixed. It should be simple enough to be able to trace using the
#   debugger and find out what is wrong.
#   It is supposed to make change. After it asks the user for the
#   amount of money in cents, it outputs the number of quarters, dimes,
#   nickels and pennies needed to make the change.
#
# A SAMPLE RUN OF THIS PROGRAM with 34 CENTS OUTPUTS:
#   You need 1 coins worth 25 cents.
#   You need 0 coins worth 10 cents.
#   You need 1 coins worth 5 cents.
#   You need 4 coins worth 1 cents.
#
# MODIFIED: February 5, 2014
#  - simplified the code by taking out extra things that are not related
#    to the errors.
#  - added comments to explain what this program is doing
######################################################################
# Acknowledgements:
# This is original BAD code
######################################################################

response = 'no'
while response != "yes" or "YES":	# Loop check to stop asking when the user says no

    response = raw_input("Are we done?")	# Ask the user if he/she wants to quit

    if response == "no" or "No": 	# The user wants to do this again.

        change = int(raw_input("Great! How much money do we have to making change? "))

		# now that we are continuing, let's make some change!
        if( change <= 0 ):
			# Check to make sure that we are putting in a valid number. We cannot make
			# change on a negative number.
            print('Can you put in a positive number?')
        else:
            # Ok, output the number of each coin needed to make change
			# starting with the quarters, dimes, nickels and then pennies
            for coin in [25, 10, 5, 1]:
                num_coins = change // coin	# find the number of each type of coin
                change = change % coin		# find out how much is left after taking out
											# this change.

            # output the number of each kind of coin
            print( 'You need '+ str(num_coins) + ' coins worth ' + str(coin) + ' cents.' )