Walmart Store System

Using a linked list data structure, design and develop a system for Walmart Store. In Walmart Store,

there are different aisles. In one aisle there are dairy products. In the other there are pulses and

grains. In the third there are bath and cleaning products. In fourth aisle they have ready to eat food

items. In $5$th aisle there are vegetables. Maintain an array of linked lists for aisles. For each aisle,

there is a linked list. The nodes in the linked list are the items in that aisle like the item id$,$

item$\_$name, quantity, expiry$\_$date, threshold quantity. Now there is another linked list of bills. When

a user comes to the Walmart store, he should be billed for whatever items he buys. The

corresponding quantity of each item is to be decremented in the main array of linked list of items.

The array of aisles should be sorted according to the aisle$\_$number. Items are sorted by item$\_$id in

each aisle.

Implement the following functions :

Add $/$ update item Adds or updates an item in the linked list.

Delete an item Delete the item

Add aisle$/$update aisle Adds or updates an aisle

Delete aisle Deletes aisle

Check availability of particular item for particular quantity and within the expiry date.

o Inputs Item$\_$id$,$ quantity required for item$\_$id and the expiry date

Function to generate a message when any particular item goes beyond its defined threshold

quantity, so that it can be planned to order it soon.

Function to generate a message on a certain ready$-$to$-$eat item if its expiry is within one

week.

Function to generate a message when certain dairy product is likely to expire within one day.

Merge two aisles in a single aisle. For example, Wallmart wishes to add over the counter

medicine section to the store. So$,$ they have less space and want to merge their two aisles,

namely, dairy and vegetables.

Write a function that takes item$\_$id as input and provides a list of items which are more

often bought with the given item$\_$id$.$

Example where this would be useful $-$ You are the owner of Walmart. You want to optimise

your business, so you want to do some data mining and find out the patterns in the data.

You want to make a strategic decision as to whether people who buy milk also buy bread

and people who buy bread also buy eggs and so they want to make a decision as to whether

bread, eggs and milk kept together will make it easy for the customers and in turn increase

their sales.

File handling is recommended to be used. The input should be scanned from a file to build the array

of aisles, and items in each aisle with their data like quantity, expiry date, threshold quantity etc.

write the above program in c language with entire functions