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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. void _gay();
  5. void _gay2();
  6.  
  7. void(*gay)() = _gay;
  8.  
  9.  
  10. void _gay()
  11. {
  12. 	printf("_gay\n");
  13. 	static bool inited = false;
  14. 	if (!inited)
  15. 	{
  16. 		printf("rare stuff here\n");
  17. 		gay = _gay2;
  18. 		inited = true;
  19. 	}
  20.  
  21. 	_gay2();
  22. }
  23.  
  24. void _gay2()
  25. {
  26. 	printf("_gay2\n");
  27. 	printf("actual work\n");
  28. }
  29.  
  30.  
  31. int main() {
  32. 	gay();
  33. 	gay();
  34. 	return 0;
  35. }
Success #stdin #stdout 0s 4384KB
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stdin
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Standard input is empty
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_gay
rare stuff here
_gay2
actual work
_gay2
actual work
https://ideone.com/fL4R0y
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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