fork download 
  1. 	#include <iostream>
  2. 	using namespace std;
  3.  
  4. 	class Foo {
  5. 	    enum OpState {
  6. 	    	None ,
  7. 	    	PlusState ,
  8. 	    	NotState ,
  9. 	    };
  10.  
  11. 	public:
  12. 	   Foo& operator+() {
  13. 	   	   cout << "operator+()" << endl;
  14. 	       opState = PlusState;
  15. 	       return *this;
  16. 	   }
  17. 	   Foo& operator!() {
  18. 	   	   cout << "operator!()" << endl;
  19. 	       switch(opState) {
  20. 	       case PlusState:
  21. 	           operatorexclamativeplus();
  22. 	           opState = None;
  23. 	           break;       
  24. 	       default:
  25. 	           opState = NotState;
  26. 	           break;       
  27. 	       }
  28. 	       return *this;
  29. 	   }
  30.  
  31. 	private:
  32. 	    Foo& operatorexclamativeplus() {
  33. 	   	   cout << "operatorexclamativeplus()" << endl;
  34.            opState = None;
  35. 	   	   return *this;
  36. 	    }
  37. 	    Foo& operatorexclamativeplus(const Foo& rhs) {
  38. 	   	   cout << "operatorexclamativeplus(const Foo& rhs)" << endl;
  39.            opState = None;
  40. 	   	   return *this;
  41. 	    }
  42.  
  43. 	    OpState opState;
  44. 	};
  45.  
  46.  
  47. 	int main() {
  48. 		Foo x;
  49. 		Foo z = !+x;
  50. 		return 0;
  51. 	}
Success #stdin #stdout 0s 3340KB
comments (?)
stdin 
Standard input is empty
stdout 
operator+()
operator!()
operatorexclamativeplus()
https://ideone.com/ao3Xb2
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!