#include <iostream>

#include <cmath>

struct polar{

    double distance;

    double angle;

};

struct rect{

  double x;

  double y;

};

void rect_to_polar(const rect * pxy, polar * pda);

void show_polar(const polar * pda);

int main(int argc, char const *argv[]) {

  using namespace std;

  rect rplace;

  polar pplace;

  std::cout << "Enter the x and y values:";

  while (cin >> rplace.x >> rplace.y)

  {

    rect_to_polar(&rplace, &pplace);

    show_polar(&pplace);

    std::cout << "Next two numbers (q to quit)" << '\n';

  }

  std::cout << "Done." << '\n';

  return ;

}

void show_polar(const polar * pda)

{

  using namespace std;

  const double Rad_to_deg = 57.29577951;

  std::cout << "distance = " << pda->distance;

  std::cout << ", angle = " << pda->angle * Rad_to_deg;

  std::cout << " degrees" << '\n';

}

void rect_to_polar(const rect * pxy, polar * pda)

{

  using namespace std;

  pda->distance = sqrt(pxy->x * pxy->x + pxy->y * pxy->y);

  pda->angle = atan2(pxy->y, pxy->x);

}

#include <iostream>

#include <cmath>

struct polar{

  double distance;

  double angle;

};

struct rect{

  double x;

  double y;

};

polar rect_to_polar(rect xypos);

void show_polar(polar dapos);

int main(int argc, char const *argv[]) {

  using namespace std;

  rect rplace;

  polar pplace;

  std::cout << "Enter the x and y values: " << '\n';

  while (cin >> rplace.x >> rplace.y){

    pplace = rect_to_polar(rplace);

    show_polar(pplace);

    std::cout << "Next two numbers (q to quit) :" << '\n';

  }

  return ;

}

polar rect_to_polar(rect xypos)

{

  using namespace std;

  polar answer;

  answer.distance = sqrt(xypos.x * xypos.x + xypos.y * xypos.y);

  answer.angle = atan2(xypos.y, xypos.x);

  return answer;

}

void show_polar(polar dapos)

{

  using namespace std;

  const double Rad_to_deg = 57.29577951;

  std::cout << "distance = " << dapos.distance << '\n';

  std::cout << ", angle = " << dapos.angle * Rad_to_deg << '\n';

}