Untitled

#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <iomanip>
#include <algorithm>

using namespace std;

struct Product {
    int skuCode;
    string prodName;
    double price;
    int quantity;
    string prodDescription;
};

// Function declarations
void addProduct();
void removeProduct();
void updateProduct();
void searchProduct();
void displayAllProducts();
void displayMenu();
void loadProducts(vector<Product>& products);
void saveProducts(const vector<Product>& products);

const string FILENAME = "inventory.txt";

// Main function
int main() {
    int choice;
    do {
        displayMenu();
        cin >> choice;
        switch (choice) {
            case 1: addProduct(); break;
            case 2: removeProduct(); break;
            case 3: updateProduct(); break;
            case 4: searchProduct(); break;
            case 5: displayAllProducts(); break;
            case 6: cout << "Exiting...\n"; break;
            default: cout << "Invalid choice, please try again.\n";
        }
    } while (choice != 6);
    return 0;
}

// Function to display the main menu
void displayMenu() {
    cout << "\n--- Inventory Management System ---\n";
    cout << "1. Add Product\n";
    cout << "2. Remove Product\n";
    cout << "3. Update Product\n";
    cout << "4. Search Product\n";
    cout << "5. Display All Products\n";
    cout << "6. Exit\n";
    cout << "Enter your choice: ";
}

// Function to load products from file
void loadProducts(vector<Product>& products) {
    products.clear();
    ifstream inFile(FILENAME);
    Product prod;
    while (inFile >> prod.skuCode) {
        inFile.ignore();  // Ignore newline character
        getline(inFile, prod.prodName);
        inFile >> prod.price >> prod.quantity;
        inFile.ignore();
        getline(inFile, prod.prodDescription);
        products.push_back(prod);
    }
    inFile.close();
}

// Function to save products to file
void saveProducts(const vector<Product>& products) {
    ofstream outFile(FILENAME);
    for (const auto& prod : products) {
        outFile << prod.skuCode << '\n'
                << prod.prodName << '\n'
                << prod.price << '\n'
                << prod.quantity << '\n'
                << prod.prodDescription << '\n';
    }
    outFile.close();
}

// Function to add a product
void addProduct() {
    vector<Product> products;
    loadProducts(products);

    Product newProd;
    cout << "Enter SKU Code: ";
    cin >> newProd.skuCode;
    cin.ignore(); // Ignore leftover newline
    cout << "Enter Product Name: ";
    getline(cin, newProd.prodName);
    cout << "Enter Price: ";
    cin >> newProd.price;
    cout << "Enter Quantity: ";
    cin >> newProd.quantity;
    cin.ignore();
    cout << "Enter Product Description: ";
    getline(cin, newProd.prodDescription);

    products.push_back(newProd);
    saveProducts(products);

    cout << "Product added successfully!\n";
}

// Function to remove a product
void removeProduct() {
    vector<Product> products;
    loadProducts(products);

    int sku;
    cout << "Enter SKU Code of the product to remove: ";
    cin >> sku;

    auto it = remove_if(products.begin(), products.end(), [sku](const Product& prod) {
        return prod.skuCode == sku;
    });

    if (it != products.end()) {
        products.erase(it, products.end());
        saveProducts(products);
        cout << "Product removed successfully!\n";
    } else {
        cout << "Product not found!\n";
    }
}

// Function to update a product
void updateProduct() {
    vector<Product> products;
    loadProducts(products);

    int sku;
    cout << "Enter SKU Code of the product to update: ";
    cin >> sku;
    cin.ignore();

    auto it = find_if(products.begin(), products.end(), [sku](const Product& prod) {
        return prod.skuCode == sku;
    });

    if (it != products.end()) {
        cout << "Enter new Product Name: ";
        getline(cin, it->prodName);
        cout << "Enter new Price: ";
        cin >> it->price;
        cout << "Enter new Quantity: ";
        cin >> it->quantity;
        cin.ignore();
        cout << "Enter new Product Description: ";
        getline(cin, it->prodDescription);
        saveProducts(products);
        cout << "Product updated successfully!\n";
    } else {
        cout << "Product not found!\n";
    }
}

// Function to search for a product
void searchProduct() {
    vector<Product> products;
    loadProducts(products);

    int sku;
    cout << "Enter SKU Code to search: ";
    cin >> sku;

    auto it = find_if(products.begin(), products.end(), [sku](const Product& prod) {
        return prod.skuCode == sku;
    });

    if (it != products.end()) {
        cout << "Product Found:\n";
        cout << "SKU Code: " << it->skuCode << "\n";
        cout << "Name: " << it->prodName << "\n";
        cout << "Price: $" << fixed << setprecision(2) << it->price << "\n";
        cout << "Quantity: " << it->quantity << "\n";
        cout << "Description: " << it->prodDescription << "\n";
    } else {
        cout << "Product not found!\n";
    }
}

// Function to display all products
void displayAllProducts() {
    vector<Product> products;
    loadProducts(products);

    cout << left << setw(10) << "SKU" << setw(20) << "Name" << setw(10) << "Price" << setw(10) << "Quantity" << "Description" << '\n';
    cout << "----------------------------------------------------------\n";
    for (const auto& prod : products) {
        cout << left << setw(10) << prod.skuCode << setw(20) << prod.prodName << setw(10) << prod.price << setw(10) << prod.quantity << prod.prodDescription << '\n';
    }
}