#include "library.h"
      
      double C_to_F(double C)
      {
        return C*9/5+32;
      }
      
      double F_to_C(double F)
      {
        return (F-32)*5/9;
      }
      
      double C_to_K(double C)
      {
        return C+273.15;
      }
      
      double K_to_C(double K)
      {
        return K-273.15;
      }
      
      double F_to_K(double F)
      {
        return C_to_K(F_to_C(F));
      }
      
      double K_to_F(double K)
      {
        return C_to_F(K_to_C(K));
      }
      
      void main(void)
      { 
        print("27 gallons at 65 deg F expands to 30 gallons at ");
        print(K_to_F(F_to_K(65)*30.0/27.0));
        print(" deg F");
        newline();
      }