Welcome to the Shopping System Client

Hey there 👋! This C++ project is your go-to client-side application for a shopping system that's fully integrated with an Oracle database. Below is a quick rundown of what's under the hood.

🛠 Main Components

• ShoppingCart Struct: Think of it as your virtual cart where you stash all the products you're interested in.
• Connection and Environment Variables: These guys make sure we can chat with the Oracle database smoothly.
• Main and Sub-Menus: Simple and intuitive UI for you to navigate through login and customer service options.

📚 Main Functions

• mainMenu() and subMenu(): These show you your basic choices—log in, customer service, and so on.
• customerService(): Once you're in, here's where you can place an order, check its status, or even cancel it.
• displayOrderStatus(): Feeling anxious? Check how far along your order is!
• cancelOrder(): Changed your mind? No worries—just cancel it right here.
• createEnvironment() and terminateEnvironment(): These set up and tear down your connection to the Oracle database.
• openConnection() and closeConnection(): Self-explanatory, really—get connected and then say goodbye.
• customerLogin(): This function checks if you're in the database before letting you in.
• addToCart(): See something you like? Add it to your cart!
• displayProducts(): Peek inside your cart whenever you like.
• checkout(): Ready to make it official? This will process your order and update the database.

📂 Database Interactions

• find_customer Procedure: This helps customerLogin() confirm you're an existing customer.
• find_product Procedure: Used by addToCart() to find out how much you need to pay for that awesome product.

🚨 Note: The code seems to be a work in progress—so don't be surprised if some functions like findProduct() or checkout() are still getting dressed (i.e., they're called but not fully implemented).

🛡 Error Handling

We've got try-catch blocks in place for dealing with any SQL mishaps, so rest easy!

🎬 Program Flow

1. You're greeted with a main menu: Login or Exit.
2. If you opt to login, the program checks if you're in the database.
3. If you are, welcome aboard! You'll see a customer service menu where you can place, check, or cancel your orders.

That's the grand tour! Feel free to dive in and explore. Happy shopping! 🛒