-Create simple cashier system using java that will first ask the customer's name. It should continue to accept a price of an item and displays the current total while the user input is not equals to zero.
-The program should ask the user if the customer is a senior citizen. If the user input is 'Y' the current total should have a discount of 20%. Otherwise, if the user input is 'N', no discount.
-The program should then display the total amount, and then prompts the user to enter cash. While cash is insufficient, it would continuously ask the user to enter cash until it is sufficient to pay the total amount.
-Then, displays the amount of change.
-Lastly, display text thanking the customer.