// BlankConsoleLab.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <iostream>
#include <string>
#include <iomanip>      
#include <sstream>


using std::string;
using std::to_string;
using std::cout;
using std::cin;
using std::endl;
using std::setprecision;

// Function name cToF, inputs a float a, returns a float temp
float cToF(float a) {
    float temp = (9.0 / 5) * a + 32;
    return temp;
}
// Function name windChill, inputs a float d, w, and boolean x by reference, returns a float out
float windChill(float& d, float& w, bool& x) {
    
    float out; 
    if (x == false) {
        out = 35.74 + 0.6215 * cToF(d) - 35.75 * pow(w, 0.16) + 0.4275 * cToF(d) * pow(w, 0.16);
    }
    else {
        out = 35.74 + 0.6215 * d - 35.75 * pow(w, 0.16) + 0.4275 * d * pow(w, 0.16);
    }
    return out;
}
// Function name output, inputs floats d, w, chill, and boolean x, returns a string containing the complete output
string output(float d, float w, float chill, bool x) {
    std::ostringstream ss;
    ss.precision(3);
    string temp;

    if (x == true) {
        temp = "fahrenheit";
    }
    else {
        temp = "celsius";
    }
    return "For " + to_string(d) + " " + temp + " and " + to_string(w) + " mph wind, the windchill is: " + to_string(chill);
}

int main()
{
    const int MINF = -80;
    const int MAXF = 121;
    const int MINC = -62;
    const float MAXC = 49.5;
    float c = -100;
    float f = 200;
    float w;
    string temp;
    bool range = false;
    bool tilSpeed = false; 
    bool isF = false;
    cout << "Do you want to enter in Fahrenheit (F) or (C)" << endl;
    cin >> temp;
    
    while(range == false) {
 
        if (temp == "C") {
            range = true;
            cout << "Enter a temperature in Celsius between -62 and 49.5: " << endl;
            cin >> c;
            if (c < MINC || c > MAXC) {
                range = false;
            }
            else {
                cout << "You entered " << c << " degrees celsius, or " << cToF(c) << " degrees fahrenheit" << endl;
               
                tilSpeed = true;
            }


        }
        else if (temp == "F") {
            range = true;
            cout << "Enter a temperature in Fahrenheit between -80 and 121: " << endl;
            cin >> f;
            if (f < MINF || f > MAXF) {
                range = false;
            }
            else {
                cout << "You entered " << f << " degrees fahrenheit" << endl;
                tilSpeed = true;
            }



        }

        else {
            cout << "Do you want to enter in Fahrenheit (F) or (C)" << endl;
            cin >> temp;
        }
        
        if (range == true) {
            tilSpeed = true;
            cout << "Enter a speed between 0 and 231: " << endl;
            cin >> w;
            while (w > 231 || w < 0) {
                cout << "Enter a speed between 0 and 231: " << endl;
                cin >> w;

            }
        }

    }
  
    if (c != -100) {
        isF = false;

        cout << setprecision(2) << output(c, w, windChill(c, w, isF), isF);
        
    }

    else if (f != 200) {
        isF = true;
        cout << setprecision(2) << output(f, w, windChill(f, w, isF), isF);
        
    }


}