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  1. #include <iostream>
  2.  
  3. void printer(float i){
  4. 	std::cout<<i<<std::endl;
  5. }
  6. //////////////////////////////////
  7. //template
  8. template<typename F,typename Arg>
  9. void Invoker(F func, Arg arg){
  10. 	func(arg);
  11. }
  12. /////////////////////////////////
  13.  
  14. /////////////////////////////////
  15. // function pointer
  16. typedef 
  17. 	void // return type
  18. 	(*void_func_type) //this "type" name
  19. 	(float) //function args
  20. 	;//end
  21. void Invoker1(void_func_type func, float arg){
  22. 	func(arg);
  23. }
  24. ////////////////////////////////
  25.  
  26. //functional
  27. #include <functional>
  28. void Invoker2(std::function<void(float)> func, float arg){
  29. 	func(arg);
  30. }
  31.  
  32.  
  33. int main(void) {
  34. 	// template
  35. 	Invoker(printer,10.f);
  36. 	// function pointer
  37. 	Invoker1(printer,10.f);
  38.  
  39. 	//functional
  40. 	Invoker2(printer,10.f);
  41.  
  42. 	return 0;
  43. }
  44.  
Success #stdin #stdout 0s 3296KB
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https://ideone.com/tFwmiy
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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