#include <iostream>

using namespace std;

using std::cout;
using std::cin;
using std::endl;
using std::string;
char y;
char n;

int fahrenheit(int t);
//changes celsius to farenheit
int fahrenheit(int t)
{
    int f{};

    //f = (t * (9 / 5)) + 32;
    f = (9 / 5) * t + 32;

    return f;
}

int main()
{
    float t{};
    int f{};
    float w{};
    float wc{};
    char choice{};

    //collects a temp
    cout << "Enter a temperature between -80 and 121: ";
    cin >> t;

    //makes sure temp is between -80 and 121
    if (t < -80 || t > 121)
    {
        cout << "Input invalid, please enter a number between -80 and 121" << endl;
        cin.ignore(99, '\n');
        return t;
    }
        

    cout << "type y or n" << " is the tempterature in fahrenheit?"<<endl;
    cin >> t;
    if (char choice = 'n')
    {
        f = fahrenheit(t);
    }
    else if (char choice = 'y')
    {
        cin >> f;
    }

    //collects windspeed
    cout << "Enter a wind speed between 0 and 231: ";
    cin >> w;
    //windspeed between 0-231
    if (w < 0 || w > 231)
    {
        cout << "Input invalid, please enter a number between 0 and 231" << endl;
        cin.ignore(99, '\n');
        return w;
    }

    //f = temp w = wind
    wc = (35.74 + 0.6215 * f - 35.75 * pow(w, 0.16) + .4275 * f * pow(w, 0.16));

    //displays wind, temp, and windchill
    cout << w << " wind" << endl;
    cout << f << " temp" << endl;
    cout << wc << " wind chill" << endl;

}