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  1. #include <iostream>
  2. #include <utility>
  3.  
  4. struct A {
  5. 	int x;
  6. 	explicit A(int val) : x(val) {}
  7. };
  8.  
  9. void add(A&& a, A&& b, A&& c) {
  10. 	std::cout << "&&:" << (a.x + b.x + c.x) << std::endl;
  11. }
  12.  
  13. void add(const A& a, const A& b, const A& c) {
  14. 	std::cout << "const&:" << (a.x + b.x + c.x) << std::endl;
  15. }
  16.  
  17. template <typename ...Args>
  18. void call(Args&& ...args) {
  19. 	add(std::forward<Args>(args)...);
  20. }
  21.  
  22. int main() {
  23. 	A a(4);
  24. 	A b(5);
  25. 	A c(6);
  26. 	add(A(1), A(3), A(2));
  27. 	add(a, b, c);
  28. 	add(A(1), b, A(2));
  29. 	add(a, A(2), A(2));
  30. 	std::cout << "-----\n";
  31. 	call(A(1), A(3), A(2));
  32. 	call(a, b, c);
  33. 	call(A(1), b, A(2));
  34. 	call(a, A(2), A(2));
  35. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin
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Standard input is empty
stdout
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&&:6
const&:15
const&:8
const&:8
-----
&&:6
const&:15
const&:8
const&:8
https://ideone.com/Vm49Rx
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
secret

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