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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct foo{
  5. 	bool operator==(bool val) const {
  6. 		cout << "foo::operator== ";
  7. 		return false;
  8. 	}
  9. 	bool operator!()const{
  10. 		cout << "foo::operator!";
  11. 		return reinterpret_cast<intptr_t>(this)/sizeof(this) / 2 == 0;
  12. 	}
  13. };
  14.  
  15. bool operator==(bool lhs,const foo &rhs){
  16. 	cout << "global operator==";
  17. 	return true;
  18. }
  19.  
  20. foo Function(){
  21. 	return foo();
  22. }
  23.  
  24. int main() {
  25. 	if(false == Function()){
  26. 		cout << "true" <<endl;
  27. 	}else{
  28. 		cout <<"false" << endl;
  29. 	}
  30. 	if(Function() == false){
  31. 		cout << "true" <<endl;
  32. 	}else{
  33. 		cout <<"false" << endl;
  34. 	}
  35. 	if(!Function()){
  36. 		cout << "true" <<endl;
  37. 	}else{
  38. 		cout <<"false" << endl;
  39. 	}
  40. 	return 0;
  41. }
Success #stdin #stdout 0s 2728KB
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stdin
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Standard input is empty
stdout
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global operator==true
foo::operator== false
foo::operator!false
https://ideone.com/KDzuzn
language:
C++ 4.3.2 (gcc-4.3.2)
created:
12 years ago
visibility:
public

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