#include <iostream>
#include <string>

int main()
{

  std::string answer = "";
  std::string answer2 = "";
  std::string answer3 = "";
  double input = 0;

  do
  {
      std::cout << "Ce vrei să convertești?" << std::endl;
      std::cout << "1. temperatură" << std::endl;
      std::cout << "2. greutate" << std::endl;

      getline(std::cin, answer);

  } while(answer != "1" && answer != "2");

  //pentru că am primit string și vrem o valoare întreagă
  switch(stoi(answer)) {
    case 1 :  std::cout << "Din ce vrei să convertești??" << std::endl;
              std::cout << "1. Kelvin" << std::endl;
              std::cout << "2. Celsius" << std::endl;
              std::cout << "3. Fahrenheit" << std::endl;

              getline(std::cin, answer);

              std::cout << "În ce vrei să convertești? (Kelvin, Celsius, Fahrenheit)" << std::endl;

              std::cout << "1. Kelvin" << std::endl;
              std::cout << "2. Celsius" << std::endl;
              std::cout << "3. Fahrenheit" << std::endl;

              getline(std::cin, answer2);

              std::cout << "Valorea de intrare: " ;
              getline(std::cin, answer3);
              std::cout << std::endl;

              input = stod(answer3);

              std::cout << "Valoarea de ieșire este: ";
              if(answer == "1" && answer2 == "2") //K to C
              {
                std::cout << input - 273.15 << std::endl;
              }
              else if(answer == "1" && answer2 == "3") //K to F
              {
                std::cout << input * (9/5) - 459.67 << std::endl;
              }
              else if(answer == "2" && answer2 == "1") //C to K
              {
                std::cout << input + 273.15 << std::endl;
              }
              else if(answer == "2" && answer2 == "3") //C to F
              {
                std::cout << input * (9/5) + 32 << std::endl;
              }
              else if(answer == "3" && answer2 == "1") //F to K
              {
                std::cout << (input + 459.67) * (5/9) << std::endl;
              }
              else if(answer == "3" && answer2 == "2") //F to C
              {
                std::cout << (input - 32) * (5/9) << std::endl;
              }
              else
                std::cout << "Nici o modificare" << std::endl;
              break;
    case 2 :  std::cout << "Din ce vrei să covertești?" << std::endl;
              std::cout << "1. Grame" << std::endl;
              std::cout << "2. Pietre(Stones)" << std::endl;
              std::cout << "3. Livre(Pounds)" << std::endl;

              getline(std::cin, answer);

              std::cout << "What do you want to convert to?" << std::endl;

              std::cout << "1. Grame" << std::endl;
              std::cout << "2. Pietre(Stones)" << std::endl;
              std::cout << "3. Livre(Pounds)" << std::endl;

              getline(std::cin, answer2);

              std::cout << "Valoarea de intrare: " ;
              getline(std::cin, answer3);
              std::cout << std::endl;

              input = stod(answer3);

              std::cout << "Valoarea de iesire: ";
              if(answer == "1" && answer2 == "2") //G to S
              {
                std::cout << input * 0.0001574729979 << std::endl;
              }
              else if(answer == "1" && answer2 == "3") //G to LBS
              {
                std::cout << input / 453.59237 << std::endl;
              }
              else if(answer == "2" && answer2 == "1") //S to G
              {
                std::cout << input * 0.00015747304441777 << std::endl;
              }
              else if(answer == "2" && answer2 == "3") //S to LBS
              {
                std::cout << input * 14 << std::endl;
              }
              else if(answer == "3" && answer2 == "1") //LBS to G
              {
                std::cout << input * 453.59237 << std::endl;
              }
              else if(answer == "3" && answer2 == "2") //LBS to S
              {
                std::cout << input * 0.071429 << std::endl;
              }
              else
                std::cout << "Nici o modificare" << std::endl;
              break;
    default: std::cout<<"Datele introduse sunt greșite";
             break;
  }
}