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  1. #include <functional>
  2.  
  3. class Calc {
  4.  
  5. private:
  6.  
  7. 	std::function <void()> Command_Function;
  8.  
  9. 	void Naming() {
  10. 	}
  11.  
  12. public:
  13.  
  14. 	Calc() { 
  15. 		Command_Function = Naming;
  16. 	}
  17.  
  18. 	void operator()() {
  19. 	}
  20. };
  21.  
  22.  
  23.  
  24. int main() {
  25. 	Calc calculater;
  26. 	calculater();
  27. 	return 0;
  28. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp: In constructor ‘Calc::Calc()’:
prog.cpp:15:22: error: invalid use of non-static member function ‘void Calc::Naming()’
   Command_Function = Naming;
                      ^~~~~~
prog.cpp:9:7: note: declared here
  void Naming() {
       ^~~~~~
stdout
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Standard output is empty
https://ideone.com/wvjHju
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
secret

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