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Showing posts from February, 2025

The Muggy Weather Robotics Duo

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 The Muggy Weather Robotics Duo A C++ System That Thinks, Feels (Sensors!), and Acts Humidity is like the quiet character in the weather story that actually runs the show. On muggy days, everything feels heavier—breathing, drying laundry, running machines, even keeping a data center cool. For people, it’s about comfort and health; for machines, it’s about performance and reliability; for plants and buildings, it’s about moisture balance and mold risk. In robotics and automation, muggy weather isn’t just a nuisance—it’s a signal . It tells your systems when to ventilate, when to dehumidify, when to throttle physically demanding tasks, and when to take preventative maintenance actions. Today, we’ll build a two-program C++ system that “understands” muggy weather: Program A — sensor_hub.cpp A sensor-side program that generates (or ingests) a live stream of environmental data (temperature, relative humidity, pressure, CO₂, VOCs). Think of it as your robotic nose and skin , con...
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C++ Projects: Online Exam System

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Building a Robust Online Exam System in C++: From Concept to Real-World Application ## Introduction   Modern education and certification systems demand secure, scalable, and efficient examination platforms. This article explores a C++-based online exam system through technical implementation, real-world analogies, case studies, and professional development insights. ![System Architecture Diagram](https://via.placeholder.com/800x400.png?text=Exam+System+Architecture) ## Core Implementation ### 1. Foundation Components **User Management**   ```cpp struct User {     string username;     string password; // Hashed in production     string role; // "admin" or "student" }; ``` *Real-World Analogy*: Like hotel keycards storing access levels, this structure controls system permissions. **Question Handling**   ```cpp struct Question {     string questionText;     string options[4];     int correctAnsw...
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C++ Projects: Face Detection App

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Face Detection App in C++ using OpenCV A real‑time face detection application using Haar Cascades with OpenCV. --- ## 1. Installation (Ubuntu) ```bash sudo apt-get update sudo apt-get install libopencv-dev ``` --- ## 2. Complete Code ```cpp #include <opencv2/opencv.hpp> #include <opencv2/objdetect.hpp> #include <iostream> using namespace cv; using namespace std; void detectAndDraw(Mat& img, CascadeClassifier& cascade, double scale); int main(int argc, char** argv) {     // Load Haar Cascade classifier     CascadeClassifier face_cascade;     if(!face_cascade.load("/usr/share/opencv4/haarcascades/haarcascade_frontalface_alt.xml")) {         cerr << "Error loading face cascade\n";         return -1;     }     // Choose input source     Mat image = imread("test.jpg"); // For image file     // VideoCapture cap(0); // For webcam    ...
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C++ Projects: Simple Payroll System

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Simple Payroll System in C++   A console‑based payroll management system that handles employee records, salary calculations, and tax deductions. --- ## Key Features - **Employee Management:** Detailed records for each employee   - **Automatic Salary Calculations:** Compute gross pay, tax deductions, and net pay automatically   - **Tax Deductions:** Default tax rate set at 10% (expandable for multiple tax brackets)   - **Payroll Summary Reports:** Clear, formatted output of payroll data   - **Expandable Architecture:** Easily integrate new features such as employee modification or file/database persistence --- ## Program Design ### Class Structure ### 1. `Employee` Class ```cpp #include <iostream> #include <iomanip> #include <string> using namespace std; class Employee { private:     int id;     string name;     double hourlyRate;     double hoursWorked;     double taxRat...
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C++ Projects: McDonald's Website

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Creating a McDonald's-Style Website with C++ and Crow Framework While modern web development typically uses HTML, CSS, and JavaScript, this guide demonstrates how to create a McDonald's-themed website using C++ with the Crow framework for backend handling. 1. Setting Up Dependencies Linux Installation sudo apt update sudo apt install libboost-all-dev Windows Installation (via vcpkg) vcpkg install boost 2. Building the Server Create a file named server.cpp and add the following code: #include "crow_all.h" int main() { crow::SimpleApp app; // Home Page Route CROW_ROUTE(app, "/")([](){ return R"( <!DOCTYPE html> <html lang='en'> <head> <title>McDonald's</title> <style> body { font-family: Arial, sans-serif; background-color: #ffcc00; text-align: cente...
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