#include <iostream>

using namespace std;

int main()
{
    int width, length;
    float area, ratio, mass, force;
    const float massCon = 135;

    cout << "Kite Math 1.0" << endl;

    //inputs
    do {
        cout << "Input the width of your kite (1-400 cm):" << endl;
        cin >> width;
        if (width < 1 || width > 400)
            cout << "Input a valid number." << endl;
        cout << endl;
    } while (width < 1 || width > 400);

    do {
        cout << "Input the length of your kite (1-400 cm):" << endl;
        cin >> length;
        if (length < 1 || length > 400)
            cout << "Input a valid number." << endl;
        cout << endl;
    } while (length < 1 || length > 400);

    //calculations
    area = ((width * length) / 2) / 10000;
    ratio = width / length;
    mass = massCon * area;
    force = (mass / 1000) * 9.8;

    //outputs
    cout << "Width: " << width << " cm" << endl;
    cout << "length: " << length << " cm" << endl;
    cout << "Ratio: " << ratio << endl;
    if (ratio >= 1) {
        cout << "A lower aspect ratio may provide more kite stability" << endl;
    }
    cout << "Area: " << area << " m^2" << endl;
    cout << "Mass: " << mass << " g" << endl;
    cout << "Force of gravity: " << force << " N" << endl;
}