"""
Program Name: Restaurant Billing System
Description: i) Show food item with prices ii) Take the user's order(multiple) iii) Calculate total bill iv) Apply 10% discount if bill is above ₹500 e) Exit option to close billing
"""
def add_to_order(item_name, price, qty):
item_total = price * qty
order.append((item_name, qty, item_total))
print(f"Added {qty} x {item_name}")
def calculate_total():
subtotal = 0
for item in order:
subtotal += item[2] # item[2] is the item_total
return subtotal
def apply_discount(subtotal):
if subtotal > 500:
return subtotal * 0.10 # 10% discount
return 0
order = []
while True:
print("\n--- MENU ---")
print("1. Burger - ₹120")
print("2. Pizza - ₹350")
print("3. Pasta - ₹220")
print("4. French Fries - ₹90")
print("5. Cold Drink - ₹50")
print("6. Checkout & Bill")
print("7. Exit")
choice = input("Select an option (1-7): ")
match choice:
case "1":
qty = int(input("Enter quantity: "))
add_to_order("Burger", 120, qty)
case "2":
qty = int(input("Enter quantity: "))
add_to_order("Pizza", 350, qty)
case "3":
qty = int(input("Enter quantity: "))
add_to_order("Pasta", 220, qty)
case "4":
qty = int(input("Enter quantity: "))
add_to_order("French Fries", 90, qty)
case "5":
qty = int(input("Enter quantity: "))
add_to_order("Cold Drink", 50, qty)
case "6":
if len(order) == 0:
print("Your order is empty!")
else:
subtotal = calculate_total()
discount = apply_discount(subtotal)
final_bill = subtotal - discount
print("\n--- YOUR BILL ---")
for name, q, amt in order:
print(f"{name} x {q} = ₹{amt}")
print(f"Subtotal: ₹{subtotal}")
print(f"Discount: ₹{discount}")
print(f"Total Amount to Pay: ₹{final_bill}")
break
case "7":
print("Exiting. Thank you!")
break
case _:
print("Invalid choice! Try again.")