C++ declaring a static object in a class -

i'm trying declare static object of class wrote in different class b, this:

class // example {     int x; public:     a(){ x = 4; }     int getx() { return x; } };  class b {     static obj1;  // <- problem happens here public:     static void start(); };  int main() {     b::start(); }  void b::start() {     int x = obj1.getx(); } 

what want achieve int x in b::start() equal int x in class a (4).

i tried googling past hour , understood c++ doesn't allow static objects' declarations. correct?

if so, here's question. how can same result? available workarounds? keeping in mind rest of code depends on functions in class b static.

error

error lnk2001: unresolved external symbol "private: static class b::obj1"

thanks!

you should initialize static var, code:

class // example {     int x; public:     a(){ x = 4; }     int getx() { return x; } };  class b {     static obj1;  // <- problem happens here public:     static void start(); };  b::obj1; // init static var  int main() {     b::start(); }  void b::start() {     int x = obj1.getx(); }