Jerry Feingold wants a program that will help him calculate the amount to tip a waiter at a restaurant. The program should subtract any liquor charge from the total bill and then calculate the tip (using a percentage) on the remainder. Finally, the program should display the tip on the screen. Desk-check your solution's algorithm using $85 as the total bill, $20 as the liquor charge, and 20% as the tip percentage. Then desk-check it using $35 as the total bill. $0 as the liquor charge, and 15% as the tip percentage.