c++ thermometer with classes error messages -

i know thermometer problems have been done death thought give shot.

i keep getting error messages "use of undeclared identifier 'converterc'" , "use of undeclared identifier 'converterf'". ideas?

spike

 #include <iostream> #include "converters.h" using namespace std;  int main() {     int degree;     int weehoo;      cout<<"\n\n\n\t\t enter temperature : ";     cin>>degree;     cout<<"\n\n\t\t if temperature in celsius enter 0, if farenheit enter 1 :";     cin>>weehoo;      if (weehoo==0)     {         cout<<"\n\n\t\tthe temperature in farenheit "<<converterc(degree,weehoo)<<endl;     }     else     {         cout<<"\n\n\t\tthe temperature in celsius "<<converterf(degree,weehoo)<<endl;     }     return 0; } #ifndef __again_converters_h #define __again_converters_h #endif #pragma once  class thermometer { private: float degreec;   //celcius float degreef;   //farenheit  public: void setcelcius (float c) {degreec=c;} void setfarenheit (float f) {degreef=f;} float getcelcius (void){return degreec;} float getfarenheit (void){return degreef;} thermometer  (float degree=0,float f=0, float c=0,float outtemp=0); float converterc(int degree,int weehoo); float converterf(int degree,int weehoo); }; 

converters.cpp file #include "converters.h"

 float thermometer::converterf(int degree,int weehoo) { degreec=((degree-32) * (.5556)); return degreec ;  } float thermometer::converterc(int degree,int weehoo) { degreef=((1.8)*degree)+32; return degreef; } 

converterc , converterf member function of class thermometer you're calling them without thermometer instance.

how creating thermometer instance in main?

thermometer tm; tm.converterc(degree, weehoo);