Templated function being reported as “undefined reference” during compilation

Question

These are my files:

--------[ c.hpp ]--------

#ifndef _C
#define _C

#include
class C
{
public:
    template void ca         


        

Answer 1

A way to solve this problem is to

a. remove '#include "c.hpp"' from c.cpp AND

b. include 'c.cpp' at the end of 'c.hpp' (strange sounding '#include "c.pp"')

This way the template definitions are availabe to each translation unit that includes 'c.hpp' without explicitly doing so in each .cpp file. This is called the 'inclusion model'