// BlankConsoleLab.cpp : This file contains the 'main' function. Program execution begins and ends there.
// 
// Name: Taylor Rogers
// Assignment: Lab 2
// 
// Pseudo Code:
// 1. Print "Please enter F for Fahrenheit, or C for Celsius"
//      1. Declare constant [Fmax] = 121
//      2. Declare constant [Fmin] = -80
//      3. Declare constant [Cmax] = 49.5
//      4. Declare constant [Cmin] = -62
// 2. Input [Tunit]
// 3. If [Tunit] = F is selected:
//      1. Print "Enter temperature value between -80 and 121 degrees Fahreneit"
//      2. Input [TvalF]
//      3. Clamp TvalF to limits
// 4. If [Tunit] =  C is selected:
//      1. Print "Enter temperature value between -52 and 49.5 degrees Celsius"
//      2. Input [TvalC]
//      3. Clamp TvalC to limits
// 6. Print "Enter a wind speed, in miles per hour, between 0 and 231"
//      1. Declare constant [Wmax] = 231
//      2. Declare constant [Wmin] = 0
//      3. Input [Wspeed]
//      4. Clamp Wspeed to limits
// 7. F input function:
//      1. Declare [FtoCval] = ( [TvalF] - 32 ) * ( 5 / 9 )
//      2. [TvalC] = [FtoCval]
// 8. C input function:
//      1. Declare [CtoFval] = (9 / 5 ) * [TvalC] + 32
//      2. [TvalF] = [CtoFval]
// 9. Windchill function:
//      1. [Wchill] = 35.74 + .6215 * [TvalF] - 35.75 * ( [Wspeed] ^ 0.16 ) + 0.4275 * [TvalF] * ( [Wspeed] ^ 0.16 )
// 10. Print headers "Temperature in F" , "Temperature in C", "Windpseed", "Windchill"
// 11. Print [TvalF] , [TvalC] , [Wspeed] , [Wchill]
// 


#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;

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

        FtoCfunc(TvalC);
    }


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

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

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

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

    Wchfunc(Wchill);

    cout << endl;

    cout << setw(20) << "Temp in C" << setw(20) << "Temp in F" << setw(20) << "Wind Speed" << setw(20) << "Wind Chill" << endl;

    cout << setw(20) << TvalC << setw(20) << TvalF << setw(20) << Wspeed << setw(20) << Wchill << endl;

    cout << endl;

}