Question

I omitted #include "stdafx.h in each file.

stdafx.h (precompiled headers)

#include a.h
#include b.h
class stuff;
stuff * s

a.h

class thing{float f; void fun()};

a.cc

void thing::fun(){}
thing::thing():
    f(b->f) {} // lnk 2005 linking error

b.h

struct stuff
{
    float f;
    thing * t;
};

b.cc

stuff::stuff(): f(3.4) { t = new thing; }

main.cc

int main()
{
    s = new stuff;
    s -> fun();
}

As you can see, I try to access s which is predeclared in stdafx.h

I’m doing this design so I don’t have to rely on singletons (I have one main class which I want to access in other smaller objects)

Do i need to use the extern keyword in some way ? Is the precompiled header causing problem ?

Answer 1

solved it by redesigning code. C++ is not very much clean to use.