🌿 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++ Multi-Module Smart Banking System with AI Fraud Detection

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C++ Multi-Module Smart Banking System with AI Fraud Detection

This project integrates a Core Banking System with an AI Fraud Detection System, combining traditional banking operations with machine learning-based fraud detection. The system is CLI-based and utilizes MySQL for database management.

Phase 1: Core Banking System (CLI-Based)

The Core Banking System is responsible for:

  • User Authentication (Registration & Login)
  • Managing Transactions (Deposits & Withdrawals)
  • Balance Checking
  • Database Management (MySQL Integration)

Database Setup (MySQL)

Before running the banking system, set up the MySQL database and tables.

SQL Commands to Create the Database and Tables

CREATE DATABASE banking_system;
USE banking_system;

CREATE TABLE users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(50) UNIQUE NOT NULL,
    password VARCHAR(100) NOT NULL,
    balance DOUBLE DEFAULT 0.0
);

CREATE TABLE transactions (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT, 
    amount DOUBLE,
    type ENUM ('deposit', 'withdrawal'),
    timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    fraud_flag BOOLEAN DEFAULT 0,
    FOREIGN KEY (user_id) REFERENCES users(id)
);

C++ Core Banking System (CLI)

Dependencies

Before compiling the C++ program, install the MySQL connector:

sudo apt install libmysqlcppconn-dev

Core Banking System Code (banking_system.cpp)

#include <iostream>
#include <mysql/mysql.h>
#include <string>

using namespace std;

MYSQL* conn;
MYSQL_ROW row;
MYSQL_RES* res;

const char* HOST = "localhost";
const char* USER = "root";
const char* PASSWORD = "your_mysql_password";
const char* DATABASE = "banking_system";

// Function to connect to MySQL
bool connectDB() {
    conn = mysql_init(0);
    conn = mysql_real_connect(conn, HOST, USER, PASSWORD, DATABASE, 3306, NULL, 0);
    return conn != NULL;
}

// Function to register a user
void registerUser() {
    string username, password;
    cout << "Enter username: ";
    cin >> username;
    cout << "Enter password: ";
    cin >> password;

    string query = "INSERT INTO users (username, password) VALUES ('" + username + "', '" + password + "')";
    if (mysql_query(conn, query.c_str()) == 0) {
        cout << "User registered successfully!\n";
    } else {
        cout << "Error: " << mysql_error(conn) << endl;
    }
}

// Function to log in a user
int loginUser() {
    string username, password;
    cout << "Enter username: ";
    cin >> username;
    cout << "Enter password: ";
    cin >> password;

    string query = "SELECT id FROM users WHERE username='" + username + "' AND password='" + password + "'";
    if (mysql_query(conn, query.c_str()) == 0) {
        res = mysql_store_result(conn);
        if (mysql_num_rows(res) > 0) {
            row = mysql_fetch_row(res);
            int user_id = atoi(row[0]);
            mysql_free_result(res);
            return user_id;
        }
    }
    cout << "Invalid credentials!\n";
    return -1;
}

// Function to deposit money
void deposit(int user_id) {
    double amount;
    cout << "Enter deposit amount: ";
    cin >> amount;

    string query = "UPDATE users SET balance = balance + " + to_string(amount) + " WHERE id = " + to_string(user_id);
    string transQuery = "INSERT INTO transactions(user_id, amount, type) VALUES (" + to_string(user_id) + ", " + to_string(amount) + ", 'deposit')";

    if (mysql_query(conn, query.c_str()) == 0 && mysql_query(conn, transQuery.c_str()) == 0) {
        cout << "Deposit successful!\n";
    } else {
        cout << "Error: " << mysql_error(conn) << endl;
    }
}

// Function to withdraw money
void withdraw(int user_id) {
    double amount;
    cout << "Enter withdrawal amount: ";
    cin >> amount;

    string balanceQuery = "SELECT balance FROM users WHERE id=" + to_string(user_id);
    mysql_query(conn, balanceQuery.c_str());
    res = mysql_store_result(conn);
    row = mysql_fetch_row(res);
    double balance = atof(row[0]);
    mysql_free_result(res);

    if (amount > balance) {
        cout << "Insufficient funds!\n";
        return;
    }

    string query = "UPDATE users SET balance = balance - " + to_string(amount) + " WHERE id = " + to_string(user_id);
    string transQuery = "INSERT INTO transactions(user_id, amount, type) VALUES (" + to_string(user_id) + ", " + to_string(amount) + ", 'withdrawal')";

    if (mysql_query(conn, query.c_str()) == 0 && mysql_query(conn, transQuery.c_str()) == 0) {
        cout << "Withdrawal successful!\n";
    } else {
        cout << "Error: " << mysql_error(conn) << endl;
    }
}

// Function to check balance
void checkBalance(int user_id) {
    string query = "SELECT balance FROM users WHERE id=" + to_string(user_id);
    mysql_query(conn, query.c_str());
    res = mysql_store_result(conn);
    row = mysql_fetch_row(res);
    cout << "Current balance: $" << row[0] << endl;
    mysql_free_result(res);
}

int main() {
    if (!connectDB()) {
        cout << "Database connection failed!\n";
        return 1;
    }

    int choice, user_id = -1;

    while (true) {
        cout << "\n1. Register\n2. Login\n3. Deposit\n4. Withdraw\n5. Check Balance\n6. Exit\nEnter choice: ";
        cin >> choice;

        if (choice == 1) {
            registerUser();
        } else if (choice == 2) {
            user_id = loginUser();
        } else if (choice == 3 && user_id != -1) {
            deposit(user_id);
        } else if (choice == 4 && user_id != -1) {
            withdraw(user_id);
        } else if (choice == 5 && user_id != -1) {
            checkBalance(user_id);
        } else if (choice == 6) {
            break;
        } else {
            cout << "Invalid choice or login required!\n";
        }
    }

    mysql_close(conn);
    return 0;
}

Phase 2: AI Fraud Detection Module

How Fraud Detection Works

  • Fetches transaction history from MySQL
  • Computes Z-score for each transaction
  • Flags transactions with Z-score > 3 as suspicious

Z-score Formula

Z=X−μσZ = \frac{X - \mu}{\sigma}

Where:

  • X = Transaction Amount
  • μ (Mean) = Average Transaction Amount
  • σ (Standard Deviation) = Spread of Transactions

Database Modification

Add a fraud_flag column to mark suspicious transactions:

ALTER TABLE transactions ADD COLUMN fraud_flag BOOLEAN DEFAULT 0;

Phase 3: Integrating AI with Core Banking System

  • The banking system will trigger the fraud detection module after every transaction.
  • If fraud is detected, the user will be alerted.

Integration Code in banking_system.cpp

#include <cstdlib> // For system()

void runFraudDetection() {
    system("./fraud_detector"); // Run fraud detection system
}

// Call fraud detection after transactions
if (mysql_query(conn, transQuery.c_str()) == 0) {
    cout << "Transaction successful!\n";
    runFraudDetection(); // Run fraud detection after transaction
}

Final Compilation & Execution

g++ banking_system.cpp -o banking_system -lmysqlclient
g++ fraud_detector.cpp -o fraud_detector -lmysqlclient -lm
./banking_system

Final Features

✔ User Registration & Login
✔ Deposit & Withdraw Funds
✔ Balance Check
✔ AI-Based Fraud Detection
✔ Automated Fraud Alerts

This modular banking system provides secure transactions with real-time fraud detection using AI-powered analytics.

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