fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class S {	
  5. public:
  6. 	int i;
  7. 	double d;
  8. 	S(S &&o) noexcept : i(o.i), d(o.d) {
  9. 		cout << "move!\n";
  10. 	}
  11.  
  12. 	S(const S &o) : i(o.i), d(o.d) {
  13. 		cout << "copy!\n";
  14. 	}
  15.  
  16. 	S operator=(const S &o) {
  17. 		i = o.i;
  18. 		d = o.d;
  19. 		cout << "copy asignment!\n";
  20. 		return *this;
  21. 	}
  22.  
  23. 	S operator=(S &&o) {
  24. 		i = o.i;
  25. 		d = o.d;
  26. 		cout << "move asignment!\n";
  27. 		return *this;
  28. 	}
  29.  
  30. 	S() {
  31. 		i = 1;
  32. 		d = -1;
  33. 		cout << "ctor!\n";
  34. 	}
  35.  
  36. 	// S fun() {
  37. 	// 	return *this;
  38. 	// }
  39. };
  40.  
  41. S fun() {
  42. 	cout << "fun!\n";
  43. 	S a;
  44. 	a.i = 100;
  45. 	a.d = -100;
  46. 	return a;
  47. }
  48.  
  49.  
  50. int main() {
  51. 	auto b = fun();
  52. 	cout << b.i << ' ' << b.d << endl;
  53. 	return 0;
  54. }
Success #stdin #stdout 0.01s 5516KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
fun!
ctor!
100 -100
https://ideone.com/ZesiKa
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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!