ECoffeeVendor is a program, which simulate a coffee machine. The coffee machine serves coffee with sugar and c

ECoffeeVendor is a program, which simulate a coffee machine. The coffee machine serves coffee with sugar and creamer for Rs.10/- and Rs.6/- without sugar and creamer (black coffee). The coffee machine accepts cash in value of Rs.1/-, Rs.2/- and Rs.5/- coins, as well as credit cards and debit cards. Detailed specification is as follows:


(i) Functional Requirements:


a) Accept cash input in value of 1, 2 or 5 rupee coins.


b) Accept credit card (with credit limit).


c) Accept debit card (with PIN number and balance).


d) Serve coffee with sugar and creamer for Rs.10/-.


e) Serve black coffee without sugar and cream for Rs.6/-.


f) Put correct amount of money on credit card and debit card.


(ii) Output Requirements:





a) Display the total amount of money after inputting the cash.


b) Display error message when there is no enough money, over credit limit, balance


below zero, insert invalid cash, or input invalid command.


c) Display receipt after each transaction.





(iii) Constraints:


a) One cup of white coffee contains one unit of coffee powder, sugar and creamer, while one cup of black coffee only contains one unit of coffee powder and water. For the coffee machine, there is a limit capacity of the coffee powder, sugar and creamer. If there isn’t enough coffee powder available, the coffee machine cannot serve the black coffee. And if there is not enough coffee powder, sugar and creamer, the coffee machine cannot serve the white coffee. When the coffee machine cannot fulfill the user request, the money should be refunded to users.


b) After each transaction, user should re-enter the credit card or debit card to perform another transaction.


c) The limit capacity, the credit card and the debit card information will be stored in three different files, and will be read in when the program is launched. If the initial capacity cannot serve for at least one cup of coffee, print out an error message, if the format of credit card and debit card files is not correct, print out error messages.


Related files are:


• ingredient.dat – Coffee, Sugar and creamer limits


• debitCard.dat - Debit card number, PIN and Balance


• creditCard.dat - Credit card number, credit limit


(iv) Environment:


a) Character mode interface.


b) Develop using C programming language.

ECoffeeVendor is a program, which simulate a coffee machine. The coffee machine serves coffee with sugar and c
we can give the basic idea but not the whole program right