CSE201 Advanced Programming Assignment 2 -Solved  

The application needs to serve the following flow:1) The application will have a command line based user interface where you can opt to 
enter as the admin of the application or as a customer. 
2) The customers have been divided into three categories: “ELITE”, “PRIME”, “NORMAL”. 
The difference between these 3 categories is on the basis of the discounts/perks they 
get. The details of the three categories will be explained separately below. 
3) You as the admin of the application will add some product categories under which you 
need to add some products that the company wants to sell. (at least 3 products for each 
category, and a minimum of 3 categories is expected). 
NOTE:- each product will have a unique ID. You should take care of this while 
implementing 
4) We can now enter as users of the application. When you enter the application, the user 
can see all the products and explore them but one cannot add it to the cart and buy it 
when the user has not registered. 
5) Once the user has registered on the application portal, the user becomes a “NORMAL” 
customer for the user by default. A user by default has Rs 1000 in its account. You can 
maintain a wallet attribute for each user (or customer) which stores the balance. 
6) The user can buy a membership and purchase monthly/yearly subscriptions to upgrade 
to a “ELITE” / ”PRIME” customer. An “ELITE” membership costs Rs 300 and a “PRIME” 
membership costs Rs 200. Both the costs are for one month membership. 
7) To buy a membership you should redirect to payment and deduct that amount from the 
balance of the customer. 
8) Customers also get one time use coupons which they can apply and get a discount on 
the total amount to be paid. The details of coupons will be explained further. 
9) The Customer can go through the list of products and choose items to add in the cart. 
Once all items are added in the cart, the customer can choose to delete items from the 
cart or checkout from the cart to pay the total amount. Once paid, the total amount will 
be deducted from the account of the user. 
10) Please note that if the customer has insufficient amount in the account, decline the 
payment saying that there is not sufficient balance in your account. 
11) You need to return to the home page after payment. 
12) Once you are done shopping, you can log out from the account and sign in as another 
user.Let’s see some of the functionalities of some of the entities that are important in this application. 
Admin Functionalities 
1) Enter as Admin: In this functionality, the application should take in your username and 
roll no. as password and if they’re correct, then you must get all privileges of an admin. 
2) Add Category: This functionality will help the admin to add a new category. It’ll take the 
category ID and the name of the category as input. Also take in input a product name 
and its details because there can not be an empty category. 
3) Delete Category: This functionality will help the admin to delete a new category. It’ll take 
the name of the category and category ID as input. Once the input is taken the whole 
category (including the details of the products inside it) will be deleted. 
4) Add Product: If you want to add a new product take in input the category ID and add the 
name of the product and its details (such as price, quantity) and it should get added in 
the respective category. (NOTE: the category should exist otherwise add a category 
first.) 
5) Delete Product: If you want to delete a product take in input the name of the category 
and product ID. The product from that category should get deleted. 
(NOTE:- you shouldn’t keep a category empty, if there is no product in a category, you 
should ask to add a product or else the category would get deleted). 
6) Set Discount on Product: this functionality will allow the admin to set the discount to be 
given on a particular product to specific customers. It will take in input the product ID , 
the discount percentage to be set and the customer categories which can avail this offer. 
Discount rates differ for each category of customer. (Look at the given test case to 
understand how to take input). 
7) Add giveaway deals: this functionality allows the admin to give in the product ID of 2 
products and give a lower price than their combined prices as a giveaway deal. (you can 
maintain an ID for deals also to make it convenient to track) 
Customer functionalities 
1) SignUp : This functionality will help the customer to first register and make an account on 
the application. It will take the name, age, phone number, email id and password asinput. 
2) Log in: This functionality will allow the already registered customer to log in by providing 
the name, email id and password as input. A customer will be able to login only if the 
fields match with the ones in the database. 
3) Upgrade status: this allows a customer to upgrade to an elite customer or a prime 
customer. 
4) Explore Product Catalog: This functionality allows the customers to surf through the 
product categories and products under the categories. (For more details you can refer to 
the test case). 
5) Add product to cart: user specifies a product ID and the quantity which is added to cart, 
depending on the availability of the product 
6) Make Payment: This functionality will allow the customer to make payment and shows 
the total bill of all items in cart along with the list of coupons one can apply. 
Below are the privileges that “ELITE” and “PRIME” customers enjoy. 
1) The “ELITE” customers will be eligible for all the discounts/coupons set by the admin. 
They will enjoy a 10 % discount on each product they buy. Also they can get a free 
surprise from “FLIPZON”. This means that the “ELITE” customers can randomly get a 
free product as a surprise on making an order. All deliveries will be made within 2 days 
for all the “ELITE” customers. They have to pay delivery charges equal to Rs 100 flat on 
all their orders. Also, “ELITE” customers receive 3-4 coupons for every order above the 
limit of Rs 5000 
2) For “PRIME” they will also be eligible for the discounts/coupons set by the admin. They 
will enjoy a 5% discount on each product they buy. All deliveries will be made within 3-6 
days (this can be randomized in the implementation) and they have to pay delivery 
charges equal to flat Rs 100 + 2% of the order value. They receive 1-2 coupons on 
orders above Rs 5000. 
Note: “NORMAL” customers do not receive any discount, deliveries are made within 7-10 days 
for them and have to pay delivery charges equal to 100 + 5% of order value. They receive no 
coupons whatsoever. 
Note: Every coupon can range from anywhere between 5% - 15% discount, which can be 
randomly generated. Only one coupon per order can be applied and the coupon with the highest 
discount will be applied automatically.Note: always apply product-wise discount. Out of all available discounts (from coupons, based 
on user category, individual product discount, pick the maximum one for each product) 
There will also be a feature by FLIPZON for attracting customers by providing giveaway deals 
that are special deals which customers can enjoy. These deals will be set by the admin by 
combining 2 products and offering them at a lower combined price than the price after applying 
product specific discount on both the products. Note that no other discounts are to be applied on 
any deal for any user type. Each deal will have three prices associated with it corresponding to 
each product category. 
For demonstration of the application, you need to show at least 3 categories of products and 
customers of each category. The Application should allow the following options: 
1) Exit the application: this will terminate the entire application. 
2) You can enter as admin or enter as a customer. 
3) You should allow a visiting user who has not registered just to explore the application but 
not allow the user to buy anything. 
4) The application should also have an option to show the available special deals to the 
users (the ones where 2 products are sold in combination) 
NOTE: You are allowed to use inbuilt libraries and data structures. Also handle edge cases. 
Input - 
WELCOME TO FLIPZON 
1) Enter as Admin 
2) Explore the Product Catalog 
3) Show Available Deals 
4) Enter as Customer 
5) Exit the Application 
3
Dear User, there are no deals for now!!! Please check regularly for exciting deals. 
1) Enter as Admin 
2) Explore the Product Catalog 
3) Show Available Deals4) Enter as Customer 
5) Exit the Application 
1
Dear Admin, 
Please enter your username and password 
Beff Jezos 
******** 
Welcome Beff!!!!! 
Please choose any one of the following actions: 
1) Add category 
2) Delete category 
3) Add Product 
4) Delete Product 
5) Set Discount on Product 
6) Add giveaway deal 
7) Back 
1
Add category ID 
1
Add name of the category 
Home Appliances 
Add a Product:- 
Product Name: Microwave 
Product ID: 1.1 
Capacity: 25L 
Power Consumption: 1KW 
Price: Rs. 25000/- 
Please choose any one of the following actions: 
1) Add category 
2) Delete category3) Add Product 
4) Delete Product 
5) Set Discount on Product 
6) Add giveaway deal 
7) Back 
1
Add category ID 
1
Dear Admin, the category ID is already used!!! Please set a different and a unique category ID 
Add category ID 
2
Add name of the category 
Electronics and Gadgets 
Add a Product:- 
Product Name: Eye-phone 
Product ID: 2.1 
Operating System: EYe-OS 
Storage capacity: 256GB Memory 
RAM: 16GB 
Price: Rs. 50000/- 
Please choose any one of the following actions: 
1) Add category 
2) Delete category 
3) Add Product 
4) Delete Product 
5) Set Discount on Product 
6) Add giveaway deal 
7) Back 
1
Add category ID 
3Add name of the category 
Groceries and Vegetables 
Add a Product:- 
Product Name: Basket of Daily Need 
Product ID: 3.1 
Items: Contains All vegetables, 
Contains Flour, Cereals etc. for daily use, 
Serves: 2 people 
Time sufficient for consumption : 10 days 
Price: Rs. 555/- 
Please choose any one of the following actions: 
1) Add category 
2) Delete category 
3) Add Product 
4) Delete Product 
5) Set Discount on Product 
6) Add giveaway deal 
7) Back 
3
Enter category ID 
2
Add a Product:- 
Product Name: Eye-phone Charger 
Product ID: 2.2 
Power Usage: 30 W 
Price: Rs. 100/- 
Please choose any one of the following actions: 
1) Add category 
2) Delete category 
3) Add Product 
4) Delete Product 
5) Set Discount on Product 
6) Add giveaway deal 
7) Back3
Enter category ID 
2
Add a Product:- 
Product Name: Eye-phone Charger USB-cable 
Product ID: 2.3 
Price: Rs. 50/- 
Please choose any one of the following actions: 
1) Add category 
2) Delete category 
3) Add Product 
4) Delete Product 
5) Set Discount on Product 
6) Add giveaway deal 
7) Back 
6
Dear Admin give the Product IDs you want to combine and giveaway a deal for 
Enter the first Product ID : 
2.2 
Enter the second Product ID: 
2.3 
Enter the combined price(Should be less than their combined price): 
Rs. 75/- 
Rs. 75/- 
Rs. 75/- 
Please choose any one of the following actions: 
1) Add category 
2) Delete category 
3) Add Product 
4) Delete Product 
5) Set Discount on Product6) Add giveaway deal 
7) Back 
5
Dear Admin give the Product ID you want to add discount for 
Enter the Product ID : 
2.1 
Enter discount for Elite, Prime and Normal customers respectively (in % terms) 
10 
5 
0 
Please choose any one of the following actions: 
1) Add category 
2) Delete category 
3) Add Product 
4) Delete Product 
5) Set Discount on Product 
6) Add giveaway deal 
7) Back 
7 
1) Enter as Admin 
2) Explore the Product Catalog 
3) Show Available Deals 
4) Enter as Customer 
5) Exit the Application 
4 
1) Sign up 
2) Log in 
3) Back 
1Enter name 
Roy Mustang 
Enter password 
flameAlchemist@123 
customer successfully registered!! 
1) Sign up 
2) Log in 
3) Back 
1
Enter name 
Ichigo Kurosaki 
Enter password 
W_starts_with_D 
customer successfully registered!! 
1) Sign up 
2) Log in 
3) Back 
1
Enter name 
Kone Uchiha 
Enter password 
password 
customer successfully registered!! 
1) Sign up 
2) Log in3) Back 
2
Enter name 
Roy Mustang 
Enter password 
flameAlchemist@123 
Welcome Roy Mustang!! 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
10
Current status: NORMAL 
Choose new status: ELITE 
Status updated to ELITE 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet12) back 
6
Current account balance is Rupees 700 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
3
Enter product ID and quantity 
3.1 
2 
Item successfully added to cart 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
9Insufficient balance!! Please try again 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
8
Cart successfully emptied 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
3
Enter product ID and quantity 
3.1 
1 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
9
Your order is placed successfully. Details: 
Product Name: Basket of Daily Need 
Product ID: 3.1 
Items: Contains All vegetables, 
Contains Flour, Cereals etc. for daily use, 
Serves: 2 people 
Time sufficient for consumption : 10 days 
Price: Rs. 555/- 
Delivery charges: Rs 100 
Discount: 10% of 555 = 55.50 // discount doesn’t apply on delivery charges 
Total cost = Rs 599.50 
Your order will be delivered within 2 days 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
12
Bye Roy Mustang!! 
1) Sign up 
2) Log in 
3) Back2
Enter name 
Ichigo Kurosaki 
Enter password 
W_starts_with_D 
Welcome Ichigo Kurosaki 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
11
Enter amount to add 
100000 
Amount successfully added 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back10
Current status: NORMAL 
Choose new status: PRIME 
Status updated to PRIME // balance is 100000 + 1000 - 200 at this point 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
3
Enter product ID and quantity 
2.1 
1 
Product added to cart 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
9Proceeding to checkout. Details: 
Product Name: Eye-phone 
Product ID: 2.1 
Operating System: EYe-OS 
Storage capacity: 256GB Memory 
RAM: 16GB 
Price: Rs. 50000/- 
Delivery charges: Rs 100 + 2% of 50000 = 100 + 1000 = Rs 1100 
Discount: 5% of 50000 = 2500 // discount doesn’t apply on delivery charges 
Total cost = Rs 48600 
Order placed. It will be delivered in 3-6 days. 
You have won two coupons of 10% and 15% discount. Congratulations!! 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
6
Current account balance is Rs 52200 // (100000 + 1000 - 200 - 48600) 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status11) Add amount to wallet 
12) back 
3
Enter product ID and quantity 
2.2 
10 
Product added to the cart 
1) browse products 
2) browse deals 
3) add a product to cart 
4) add products in deal to cart 
5) view coupons 
6) check account balance 
7) view cart 
8) empty cart 
9) checkout cart 
10) upgrade customer status 
11) Add amount to wallet 
12) back 
9
Proceeding to checkout. Details: 
Product Name: Eye-phone Charger 
Product ID: 2.2 
Power Usage: 30 W 
Price: Rs. 1000/- // for 10 pieces 
Delivery charges: Rs 100 + 2% of 1000 = 100 + 20 = Rs 120 
Discount: 15% of 1000 = 150 // maximum discount is taken from the coupons 
Total cost = Rs 970 
Order placed. It will be delivered in 3-6 days.