in c

First the customer has to login by entering his first name. Then the customer enters his password (at least 4 digit number). If the password is wrong, either the customer exits or will be given two more password trials. If the customer failed to recall the password, his account will be blocked Upon successful login, the customer will be given a menu of the following: Show Bills Pay Bil Show payments . Change password Logout The details are the following: Print Bills: Print the bill number, date, and amount. It will be followed with a lines that shows the total bill amounts Pay Bill: The customer selects the bill number to pay for. Next time the bill will not be displayed, but added to the payments display. Show Payments: Display the last 3 payments (bill number, date of payment and amount). Logout: The ATM will logout the customer. . The customer may login several times as long his account is not blocked