#include <iostream>

int main() {
  double ew;
  std::cout << "Enter your earth weight: ";
  std::cin >> ew;

  double merw;
  double vw;
  double marw;
  double jupw;
  double satw;
  double uranw;
  double nepw;

  int opt;

  std::cout << "1. Earth\n";
  std::cout << "2. Mercury\n";
  std::cout << "3. Venus\n";
  std::cout << "4. Mars\n";
  std::cout << "5. Jupiter\n";
  std::cout << "6. Saturn\n";
  std::cout << "7. Uranus\n";
  std::cout << "8. Neptune\n";
  std::cout << "Please select your option: ";
  std::cin >> opt;

  switch (opt) {
    case 1 :
      std::cout << "You selected Earth\n";
      std::cout << "Your weight on earth is " << ew << "\n";
      break;

    case 2 :
      std::cout << "You selected Mercury" << "\n";\
      merw = (ew*0.38);
      std::cout << "Your weight on mercury is " << merw << "\n";
      break;

    case 3 :
      std::cout << "You selected Venus" << "\n";
      vw = (ew*0.91);
      std::cout << "Your weight on venus is " << vw << "\n";
      break;

    case 4 :
      std::cout << "You seelcted Mars" << "\n";
      marw = (ew*0.38);
      std::cout << "Your weight on mars is " << marw << "\n";
      break;

    case 5 :
      std::cout << "You selected Jupiter" << "\n";
      jupw = (ew*2.34);
      std::cout << "Your weight on Jupiter is " << jupw << "\n";
      break;

    case 6 :
      std::cout << "You selected Saturn" << "\n";
      satw = (ew*1.06);
      std::cout << "Your weight on Saturn is " << satw << "\n";
      break;

    case 7 :
      std::cout << "You selected Uranus" << "\n";
      uranw = (ew*0.92);
      std::cout << "Your weight on Uranus is " << uranw << "\n";
      break;

    case 8:
      std::cout << "You selected Neptune" << "\n";
      nepw = (ew*1.19);
      std::cout << "Your weight on Neptune is " << nepw << "\n";
      break;

    default :
      std::cout << "Invalid input\n";
      break;
  }
}