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  1. #include <iostream>
  2. using namespace std;
  3. class Foo
  4. {
  5. public:
  6. 	int a,b,c;
  7.     double d,e,f;
  8.     string text;
  9.     Foo ()
  10.     {
  11.     	cout << "Sup" << endl;
  12.     }
  13.     ~Foo()
  14.     {
  15.     	cout << "R.I.P." << endl;
  16.     }
  17.  
  18. 	static Foo getInstance()
  19. 	{
  20. 		Foo o;
  21. 		o.a = 42;
  22. 		o.text = "42";
  23. 		return o;
  24. 	}
  25. 	static Foo getInstanceWithoutNRVO()
  26. 	{
  27. 		if (false)
  28. 			return Foo();
  29.  
  30. 		Foo o;
  31. 		o.a = 43;
  32. 		o.text = "43";
  33. 		return o;
  34. 	}
  35. };
  36.  
  37. int main() {
  38. 	cout << "Creating \"a\"" << endl;
  39. 	Foo a;
  40.  
  41. 	cout << "Assigning a new value to \"a\"" << endl;
  42. 	a = Foo::getInstance();
  43. 	cout << a.a << " " << a.text << endl;
  44.  
  45. 	cout << "Assigning a new value to \"a\" without NRVO" << endl;
  46. 	a = Foo::getInstanceWithoutNRVO();
  47. 	cout << a.a << " " << a.text << endl;
  48.  
  49. 	cout << "Cleaning up and finishing work" << endl;
  50. 	return 0;
  51. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin 
Standard input is empty
stdout 
Creating "a"
Sup
Assigning a new value to "a"
Sup
R.I.P.
42 42
Assigning a new value to "a" without NRVO
Sup
R.I.P.
R.I.P.
43 43
Cleaning up and finishing work
R.I.P.
https://ideone.com/cgfaTq
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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