🌿 Smart Garden Manager in C++ with Robotics, UI, Drones, and Sound "A Rainwater Conservation System for Tomorrow’s Farms"

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  🌿  Smart Garden Manager in C++ with Robotics, UI, Drones, and Sound "A Rainwater Conservation System for Tomorrow’s Farms" 🧭  1. Introduction: Farming in the Age of Climate Change In a world where clean water is more precious than gold, efficient  rainwater harvesting and plant care systems  are no longer optional — they’re essential. Smart farming doesn’t mean just automating irrigation. It means combining  robotic drones, environmental sensors, and intelligent scheduling  to build a garden that practically takes care of itself. In this guide, we build a  fully functional Garden Manager System  using  C++  that: Captures and conserves rainwater Uses  robotic drones and sensors  to monitor crop health Integrates a  real-time UI  with progress bars and alerts Includes  timers  for scheduling plant growth and drone tasks Plays  interactive sounds  based on crop state and events Whether you'r...
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C++ Mini Projects: Expense Tracker

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 C++ Mini Projects: Expense Tracker


Hey guys I'm back with another cool project: Expense Tracker.  The program helps user 
to add expenses according to category, amount spent with all the dates in tabular form and the user can also view all the money spent . It will involve calculation of money spent and then breaking it down according to different categories. Then you can save and load all the data of expense tracking for persistence. So lets go build this project!

Skills used


Input, output handling...

Adding expenses 

Input from user in category, eg. Food, rental or conveyance.


Amount spent...


Date... entered in format of yyyy-mm-dd.     

The code to build the desired project

Code...#include <iostream>
#include <vector>
#include <string>
#include <fstream>
#include <iomanip>
#include <map>

using namespace std;

// Expense structure
struct Expense {
    string category;
    double amount;
    string date;

    Expense(string c, double a, string d) : category(c), amount(a), date(d) {}
};

// Expense Tracker Class
class ExpenseTracker {
private:
    vector<Expense> expenses;

public:
    // Add a new expense
    void addExpense() {
        string category, date;
        double amount;

        cout << "Enter category (e.g., Food, Transport, etc.): ";
        cin.ignore();
        getline(cin, category);
        cout << "Enter amount: ";
        cin >> amount;
        cout << "Enter date (YYYY-MM-DD): ";
        cin.ignore();
        getline(cin, date);

        expenses.emplace_back(category, amount, date);
        cout << "Expense added successfully!\n";
    }

    // View all recorded expenses
    void viewExpenses() const {
        if (expenses.empty()) {
            cout << "No expenses recorded yet.\n";
            return;
        }

        cout << setw(15) << "Category" << setw(10) << "Amount" << setw(15) << "Date\n";
        cout << string(40, '-') << endl;

        for (const auto &expense : expenses) {
            cout << setw(15) << expense.category << setw(10) << expense.amount << setw(15) << expense.date << endl;
        }
    }

    // Calculate total and category-wise expenses
    void calculateExpenses() const {
        if (expenses.empty()) {
            cout << "No expenses recorded yet.\n";
            return;
        }

        double total = 0;
        map<string, double> categoryTotals;

        for (const auto &expense : expenses) {
            total += expense.amount;
            categoryTotals[expense.category] += expense.amount;
        }

        cout << "Total Expenses: " << total << "\n\n";
        cout << "Category-wise Breakdown:\n";

        for (const auto &entry : categoryTotals) {
            cout << setw(15) << entry.first << ": " << entry.second << endl;
        }
    }

    // Save expenses to a file
    void saveToFile() const {
        ofstream outFile("expenses.txt");
        if (!outFile) {
            cout << "Error saving data to file.\n";
            return;
        }

        for (const auto &expense : expenses) {
            outFile << expense.category << "\n" << expense.amount << "\n" << expense.date << "\n";
        }

        outFile.close();
        cout << "Expenses saved successfully!\n";
    }

    // Load expenses from a file
    void loadFromFile() {
        ifstream inFile("expenses.txt");
        if (!inFile) {
            cout << "No saved data found.\n";
            return;
        }

        expenses.clear();
        string category, date;
        double amount;

        while (getline(inFile, category) && (inFile >> amount) && inFile.ignore() && getline(inFile, date)) {
            expenses.emplace_back(category, amount, date);
        }

        inFile.close();
        cout << "Expenses loaded successfully!\n";
    }
};

// Main function
int main() {
    ExpenseTracker tracker;
    int choice;

    // Load data from file
    tracker.loadFromFile();

    do {
        cout << "\nExpense Tracker\n";
        cout << "1. Add Expense\n";
        cout << "2. View Expenses\n";
        cout << "3. Calculate Expenses\n";
        cout << "4. Save Expenses\n";
        cout << "5. Exit\n";
        cout << "Enter your choice: ";
        cin >> choice;

        switch (choice) {
            case 1:
                tracker.addExpense();
                break;
            case 2:
                tracker.viewExpenses();
                break;
            case 3:
                tracker.calculateExpenses();
                break;
            case 4:
                tracker.saveToFile();
                break;
            case 5:
                cout << "Exiting the program. Goodbye!\n";
                break;
            default:
                cout << "Invalid choice. Please try again.\n";
        }
    } while (choice != 5);

    return 0;
}

Explanation 

All expenses can be viewed in tabular form Category Amount Date
-----------------------------------------
       Food 200.50 2024-12-01
    Transport 50.00 2024-12-02


Calculation of expenses

Total ...
Sum of the expenses 

Breakdown according to categories
Total Expenses: 250.50

Category-wise Breakdown:
     Food: 200.50
Transport: 50.00



Saving and loading the expenses. Save is for storing the expenses data in the file 
Expenses.txt.

Then loading the data that is saved automatically


Sample running of the program 




Main menu 

Expense Tracker
1. Add Expense
2. View Expenses
3. Calculate Expenses
4. Save Expenses
5. Exit
Enter your choice: 



Adding new expense

Enter category (e.g., Food, Transport, etc.): Food
Enter amount: 200.50
Enter date (YYYY-MM-DD): 2024-12-01
Expense added successfully!

View the expense

     Category Amount Date
-----------------------------------------
       Food 200.50 2024-12-01




Calculate the expense
Total Expenses: 200.50

Category-wise Breakdown:
       Food: 200.50


That's it, we've successfully built this handy tool using our own skills in C++. 

See you next time with another cool project!

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