🌿 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: BMI Calculator

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C++ Mini Projects BMI Calculator 


Hey guys I'm back with another cool project. This going to be the third calculator in our series the first one with the basic calculator the second one was a student calculator and now this going to be a BMI calculator. I hope you're enjoying this series and gaining something from it. Now let's smash this project too!

Description: Project: BMI Calculator

Explanation..

Asking the user to input thier height ( meters) and weight (kilograms)

Calculating bmi( body mass index) with the help of formula 

Bmi= weight/height *height 

Categorize bmi into different health 
Options 

Underweight ...bmi<18.5
Normal weight...18.5</bmi<24.9
Overweight...25</bmi <29.9
Obesity...bmi >/30

You will learn throughout

Validates the input...

Making sure that height and weight are positive numbers 

Calculations...calculate bmi

Conditional statements...
Categorizing bmi. 

Code to build the desired project


#include <iostream>
#include <iomanip> // For setting decimal precision
using namespace std;

int main() {
    double weight, height, bmi;

    // Input: Weight and height
    cout << "BMI Calculator\n";
    cout << "--------------\n";

    // Input weight
    cout << "Enter your weight in kilograms: ";
    cin >> weight;
    while (weight <= 0) {
        cout << "Invalid weight. Please enter a positive number: ";
        cin >> weight;
    }

    // Input height
    cout << "Enter your height in meters: ";
    cin >> height;
    while (height <= 0) {
        cout << "Invalid height. Please enter a positive number: ";
        cin >> height;
    }

    // Calculate BMI
    bmi = weight / (height * height);

    // Display BMI with precision
    cout << fixed << setprecision(2); // Limit output to 2 decimal places
    cout << "\nYour BMI is: " << bmi << endl;

    // Determine health category
    if (bmi < 18.5) {
        cout << "Category: Underweight\n";
    } else if (bmi >= 18.5 && bmi < 24.9) {
        cout << "Category: Normal weight\n";
    } else if (bmi >= 25 && bmi < 29.9) {
        cout << "Category: Overweight\n";
    } else {
        cout << "Category: Obesity\n";
    }

    return 0;
}

Explanation of the code


Input of height and weight 

cout << "Enter your weight in kilograms: ";
cin >> weight;
while (weight <= 0) {
    cout << "Invalid weight. Please enter a positive number: ";
    cin >> weight;
}


Asking the user for his/her height and weight. Using the while loop to validate the input, making sure that height and weight input are positive numbers.

Calculation of bmi...
bmi = weight / (height * height);
Height is squared for matching the bmi formula 


Displaying the bmi...
cout << fixed << setprecision(2); // Limit output to 2 decimal places
cout << "Your BMI is: " << bmi << endl;

Setprecision(2): For making sure that bmi is correctly displayed with two decimal places, for the purpose of readability.

Determination of health category...
if (bmi < 18.5) {
    cout << "Category: Underweight\n";
} else if (bmi >= 18.5 && bmi < 24.9) {
    cout << "Category: Normal weight\n";
} else if (bmi >= 25 && bmi < 29.9) {
    cout << "Category: Overweight\n";
} else {
    cout << "Category: Obesity\n";
}

Using if-else statements for comparing of bmi values against given thresholds.

Assignment of health category according to bmi.


Sample running of the program 


Example of input and output 

BMI Calculator
--------------
Enter your weight in kilograms: 68
Enter your height in meters: 1.75

Your BMI is: 22.20
Category: Normal weight

Example 2

BMI Calculator
--------------
Enter your weight in kilograms: 85
Enter your height in meters: 1.70

Your BMI is: 29.41
Category: Overweight

I hope you like the idea and built the program on your own. If minor errors come across your way, then don't be discouraged because there are a million of resources from which you can get help including popular websites like stack overflow and nowadays AI. Keep building something great! 

See you next time with another cool project!



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