//John Harrison, Assignment 8
#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;

const double PI = acos(-1);
void polar(double x, double y, double& r, double& rt)
{    
     if (x == 0 && y == 0)             
     {    
          r = 0;
          rt = 0;
     }
     else
     {
          r = sqrt(pow(x,2) + pow(y,2));
          rt = atan(y/x);
     }
}
int main()
{
    double x, y, r, rt;
    cout << "Enter a x coordinate: " << endl;
    cin >> x;
    cout << "Enter a y coordinate: " << endl;
    cin >> y;
    polar(x,y,r,rt);
    double dt = rt*180/PI;
    cout << fixed << setprecision(2) << "Polar coordinates for x and y values entered: R = " << r 
     << ". Theta = " << rt << " radians or \n" << dt << " degrees." << endl;
    cin.get();
    cin.get();
}