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  1. #include <iostream>
  2. #include <functional>
  3. using namespace std;
  4.  
  5. auto f()
  6. {
  7. 	return nullptr;
  8. }
  9.  
  10. int main() {
  11.  
  12. 	void *a=f();
  13. 	std::function<double()> fn=[]{return 1;};
  14. 	std::function<void *()> fn1=[]{return nullptr;};
  15.  
  16.  
  17.  
  18. 	//std::function<void *(void)> f0 = [](void) { return NULL; }; //コンパイルエラー
  19. 	std::function<void *(void)> f1 = [](void) { return (void *)NULL; }; 
  20. 	std::function<void *(void)> f2 = [](void)->void * { return NULL; }; 
  21. 	std::function<void *(void)> f3 = [](void) { return nullptr; }; 
  22. 	// your code goes here
  23. 	return 0;
  24. }
Success #stdin #stdout 0s 3464KB
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https://ideone.com/EwRvlU
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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