c++ - Linking error: undefined reference within the same class -


i getting following error g++ 4.9:

basis.cpp:16: undefined reference `basis::foo(int, int)'

this header file:

#ifndef basis_h #define basis_h   #include "common.h" #include <math.h> #include "xdouble.h"  using namespace std;  class basis {  private:      int rank;     int dim;    public:      basis(); //empty constructor      basis(int r, int d); //default constructor      void foo(int a, int b);     void bar(int a, int b); };  #endif

the basis.cpp file following:

#include "basis.h"  basis::basis() {     rank = 0;     dim = 0; }  basis::basis(int r, int d) // default constructor {     rank = r;     dim = d;  }  void basis::bar(int a, int b) {     void foo(int a, int b); }  void basis::foo(int a, int b) {  }

even though i'm including basis.h file undefined reference error , can't understand why happening. doing wrong?

thanks

it looks copy , paste error. try this:

void basis::bar(int a, int b) {   foo(a, b); }

you made mistake because copied , pasted definition of function foo in place wanted call function.


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