// BlankConsoleLab.cpp : This file contains the 'main' function. Program execution begins and ends there.
// 
// Name: Taylor Rogers
// Assignment: Lab 2
// 



#include <iostream>
#include <math.h>
#include <iomanip>


using std::cout;
using std::cin;
using std::endl;
using std::setw;


const int Fmax = 121;
signed const int Fmin = -80;
const int Cmax = 49.5;
signed const int Cmin = -62;
const int Wmax = 231;
const int Wmin = 0;

char Tunit{};
float TvalF{};
float TvalC{};
int Wspeed{};
float Wchill{};


// Converts Fahrenheit to Celsius
float FtoCfunc(float FtoCval)
{
    FtoCval = 0;
    FtoCval = (TvalF - 32) * (5.0f / 9.0f);
    TvalC = FtoCval;
    return TvalC;
}


// Converts Celsius to Fahrenheit
float CtoFfunc(float CtoFval)
{
    CtoFval = 0;
    CtoFval = (9.0f / 5.0f) * TvalC + 32;
    TvalF = CtoFval;
    return TvalF;
}


// Converts Windspeed and Temp to Winchill
float Wchfunc(float& Wchcalc)
{
    Wchcalc = 0;
    Wchcalc = 35.74f + .6215f * TvalF - 35.75f * (pow(Wspeed, 0.16f)) + 0.4275f * TvalF * (pow(Wspeed, 0.16f));
    Wchill = Wchcalc;
    return Wchill;
}


int main()
{

    // Temp unit selection
    cout << "Please enter F for Fahrenheit or C for Celsius: ";
    cin >> Tunit;
    cout << endl;


    // Temp input in F
    if (Tunit == 70)
    {

        cout << "Please enter temperature between " << Fmin << " and " << Fmax << " degrees F: ";
        cin >> TvalF;

        cout << endl;

        if (TvalF > Fmax)
        {
            TvalF = Fmax;
            cout << "Value set to " << Fmax << "F." << endl;
            cout << endl;
        }
        else if (TvalF < Fmin)
        {
            TvalF = Fmin;
            cout << "Value set to " << Fmin << "F." << endl;
            cout << endl;
        }

        FtoCfunc(TvalC);
    }


    // Temp input in C
    else if (Tunit == 67)
    {

        cout << "Please enter temperature between " << Cmin << " and " << Cmax << " degrees C: ";
        cin >> TvalC;
        
        cout << endl;

        if (TvalC > Cmax)
        {
            TvalC = Cmax;
            cout << "Value set to " << Cmax << "C." << endl;
            cout << endl;
        }
        else if (TvalC < Cmin)
        {
            TvalC = Cmin;
            cout << "Value set to " << Cmin << "C." << endl;
            cout << endl;
        }

        CtoFfunc(TvalF);
    }

    else
        cout << "Invalid unit" << endl;


    //Windspeed
    cout << "Please enter a windpeed value between 0 and 231 in Miles Per Hour: ";

    cin >> Wspeed;

    cout << endl;

    if (Wspeed > Wmax)
    {
        Wspeed = Wmax;
        cout << "Value set to " << Wmax << "MPH." << endl;
        cout << endl;
    }
    else if (Wspeed < Wmin)
    {
        Wspeed = Wmin;
        cout << "Value set to " << Wmin << "MPH." << endl;
        cout << endl;
    }
         

    Wchfunc(Wchill);

    cout << endl;

    cout << setw(25) << "Temp (C)" << setw(25) << "Temp (F)" << setw(25) << "Wind Speed (MPH)" << setw(25) << "Wind Chill" << endl;

    cout << setw(25) << TvalC << setw(25) << TvalF << setw(25) << Wspeed << setw(25) << Wchill << endl;

    cout << endl;

}