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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class foo {
  5. 	int value;
  6. 	static int static_value;
  7.  
  8. 	public:
  9.  
  10. 	static void set_value (void *ptr, int val) {
  11. 	  reinterpret_cast<foo*>(ptr)->value = val;
  12. 	}
  13. 	int get() const { return value; }
  14.  
  15. 	static void set_static_value (void *ptr, int val) {
  16. 	  reinterpret_cast<foo*>(ptr)->static_value = val;
  17. 	  // объект излишен, т.к. меняем статический член
  18. 	  // достаточно static_value = val;
  19. 	}
  20. 	static int get_static() { return static_value; }
  21.  
  22. };
  23.  
  24. int foo::static_value;
  25.  
  26. int main() {
  27.  
  28. 	foo bar;
  29. 	foo::set_value (&bar, 123);
  30. 	cout << bar.get();
  31.  
  32. 	foo::set_static_value (&bar, 456);
  33. 	cout << bar.get_static();
  34.  
  35. 	return 0;
  36. }
Success #stdin #stdout 0s 3296KB
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123456
https://ideone.com/oXbSpS
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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