Part$1$: C Structures and Functions:

$$ C Structure to hold User Information

username$[]$: Stores the username of the user.

password$[]$: Stores the password of the user.

role: Represents the role of the user $($e$.$g$.,$ Customer, cashier, manager$).$

$$ C structure for Items Management:

itemID: Unique identifier for the item.

itemName$[]$: Name of the item.

quantity: Quantity of the item available in stock.

price: Price of the item.

supplier$[]$: Name of the supplier for the item.

$$ Functions:

addItem: Adds a new item.

deleteItem: Deletes the item with the specified ID$.$

updateItem: Updates the information of the item with the specified ID$.$

searchItem: Searches for an item by name and returns its details.

$$ C structure for Transaction Management:

transactionID: Unique identifier for the transaction.

transactionAmount: Amount involved in the transaction.

transactionType$[]$: Type of the transaction $($e$.$g$.,$ sale, purchase, return, adjustment$).$

transactionDate: Date of the transaction.

$$ Functions:

recordSale: Records a sale transaction.

recordPurchase: Records a purchase transaction.

recordReturn: Records a return transaction.

recordAdjustment: Records an adjustment transaction due to factors like damage or

expiry.

$$ C structure for Stock History:

movementID: Unique identifier for the movement.

itemID: ID of the item involved in the movement.

quantity: Quantity of items moved.

transactionType$[]$: Type of transaction associated with the movement.

movementDate: Date of the movement.

$$ Functions:

addMovement: Adds a new movement record.

deleteMovement: Deletes a movement record.

updateMovement: Updates a movement record.

searchMovement: Searches for movement history related to a specific item.

$$ Implement a function called printDetails$()$ that prints relevant details of the market

management system. The function should display information such as user details,

item information, transaction records, and stock movement history.

$$ Sorting:

Implement a sorting algorithm $($e$.$g$.,$ bubble sort$)$ to sort items based on price, quantity, or

any other relevant characteristic.

$$ Menus and Sub$-$menus:

Have Menus and Sub$-$menus in your code to direct the user to the task that he

wants to do$.$

$$ Error Handling:

Implement error handling in your code for invalid inputs