Undefined reference to static variable [duplicate]

by

You only declared A::i, need to define A::i before using it.

class A  
{ 
public:     
  static int i;
  static void init(){
     i = 1;  
  }
 };

int A::i = 0;

int WINAPI WinMain (HINSTANCE hThisInstance,
                HINSTANCE hPrevInstance,
                LPSTR lpszArgument,
                int nFunsterStil)
{
  A::i = 0;
  A::init();

  return 0;
}

Also your init() function should return a value or set to void.

More Related Contents:

  1. Why is '#' symbol used in C language's header ? Why not any other symbol ? [closed]
  2. Error while using if statements [closed]
  3. How to get values and save them to use later on Arduino?
  4. does cout before return statement of recursive function stops it?
  5. Why does C++ code for testing the Collatz conjecture run faster than hand-written assembly?
  6. Why can’t I make a vector of references?
  7. Why can’t C++ be parsed with a LR(1) parser?
  8. Generating random integer from a range
  9. How can I clear console
  10. Static linking vs dynamic linking
  11. Using custom std::set comparator
  12. How do I pass a unique_ptr argument to a constructor or a function?
  13. GCC -fPIC option
  14. Creating a 3D sphere in Opengl using Visual C++
  15. Function pointers casting in C++
  16. What are the rules for the “…” token in the context of variadic templates?
  17. Difference between pointer to a reference and reference to a pointer
  18. What’s the meaning of * and & when applied to variable names?
  19. Parsing strings of user input using the cparse library from git
  20. Override compile flags for single files
  21. How to run application which requires admin rights from one that doesn’t have them [closed]
  22. Why are std::atomic objects not copyable?
  23. Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?
  24. Handling header files dependencies with cmake
  25. Derived class with non-virtual destructor
  26. Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplicate]
  27. Macro / keyword which can be used to print out method name?
  28. How can I see the output of the Visual C++ preprocessor? [duplicate]
  29. How to convert a string literal to unsigned char array in visual c++
  30. Variable Sized Struct C++

Leave a Comment