def add_cost():
item = input('''
===>What item would you like to add?
''')
cost = input('''
=======>How much you dropping?
''')
freq = input('''
===========>How often are you dropping this?
(daily, weekly, monthly, once)
''')
r = Receipt()
r.set_item(item)
r.set_cost(cost)
r.set_frequency(freq)
return r
