Question

It written in can be python or java

There is a bookstore that have the title, year, price is should display all the books in the collection when given the list of books some wants to purchase it will return the total amount they need to pay

for example with a list of books like:

great expectations, 1861, 13.21

wind in the willows, 1999, 5.89

great gatsby ,1914,20.90

it should show a list of the books at the start

when user inputs the the book they will get the total price back, the user should also be able to buy more than one book

10% discount if the price is above £20

20% discount if the year of the book is from 1999

Answer 1

Code:

books_names=['great expectations','wind in the willows','great gatsby','the monk who sold his ferrari'
,'who will cry when you die','Wings of Fire'] #List of books names
books_years=[1861,1999,1914,1998,1898,1999] #list off books years
books_prices=[13.21,5.89,20.90,100.23,89,99.98] #corresponding prices
def printMenu (): #menu which prints the details of books
print()
for i in range (0,len(books_names)):
print(books_names[i]+"," +str(books_years[i]) + "," + str(books_prices[i])) #print details of books
printMenu() #printing menu by starting of program
Total_Cost=0.0
input_book=input("\nEnter the book name you want to buy: ") #asking user to enter the book name
while input_book!='No': #if input is No quit the program
book_price=0.0
flag=0 #used to check whether book is invalid
for i in range (0,len(books_names)): #if not check whether the book is present in the books list
if input_book==books_names[i]:
if books_years[i]==1999 and books_prices[i]>20:
book_price=books_prices[i]-(books_prices[i]*0.3) #directly 20% + 10 % =30% book is from 1999 and price>20
elif books_years[i]==1999: #if book is only from 1999 give 20% discount
book_price=books_prices[i]-(books_prices[i]*0.2)
elif books_prices[i]>20:
book_price=books_prices[i]-(books_prices[i]*0.1) #if book prices is greater than 20 give 10%
break
flag+=1 #increment flag variable
if (flag==len(books_names)):
print("\nWrong Book Entered Please Enter Proper Book name\n") #if flag equals length that means book not founded
else:
Total_Cost=Total_Cost+book_price #else add book price to total cost
printMenu() #print menu
print("\nDo you want to buy some more books if yes please enter book name else please type No:")
input_book=input("Enter your choice (If No type quit): ") #take input from user again
if (input_book=='quit'): #if user enters quit terminate loop
break
print("Total price is" , Total_Cost) #finally print total cost

Code Screenshots and Output:

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