ChangeCalc.py

# Project:  Change Calculator
# Date:     13-08-2013
# Lang:     Python 3
#
# Last Edit:        13-08-2013
# Version:          0.1
#
# Description:
# Calculates change to be given back and outputs it as text

print("CHANGE CALCULATOR")
print("")

# Input
cost = float(input("Please enter the total costs: "))*100
paid = float(input("Please enter the amount that was paid: "))*100
change = round((paid - cost), 2)

# Currency
# List the units in the currency from largest to smallest movig down
# And in the for of currency.append((value, "Name")) with value in cents
currSign = '$'
currency = []

currency.append((10000, "One Hundred Dollar Bill"    ))
currency.append(( 5000, "Fifty Dollar Bill"          ))
currency.append(( 2000, "Twenty Dollar Bill"         ))
currency.append(( 1000, "Ten Dollar Bill"            ))
currency.append((  500, "Five Dollar Bill"           ))
currency.append((  100, "One Dollar Bill"            ))
currency.append((   25, "Quarter"                    ))
currency.append((   15, "Dime"                       ))
currency.append((    5, "Nickel"                     ))
currency.append((    1, "Penny"                      ))

numbers = ["Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen", "Twenty"]

# Change value calculation
print("")
if(change < 0):
    print("Ask for %s%f more from the customer" %(currSign, -change/100))
elif(change == 0):
    print("Return of change not required")
else:
    print("Return %s%f to the customer" %(currSign, change/100))
print("")
print("Return: ")

# Change calculation
for unit in currency:
    if(change >= unit[0]):
        amt = int(change/unit[0])
        change -= amt*unit[0]
        print("- %s %s%s" %(numbers[amt], unit[1], "s"*(amt > 1))) # Prints a dash, the amount as a word, the unit, and an s if the unit is plural