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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct a
  5. {
  6.     friend void operator+(const a&, int);
  7. } A;
  8.  
  9.  
  10. void operator+(const a&, int)
  11. {
  12.     cout << "ddd";
  13. }
  14.  
  15. struct c
  16. {
  17.     operator a&() const noexcept
  18.     {
  19.         return A;
  20.     }
  21.     operator a() const noexcept
  22.     {
  23.         return A;
  24.     }
  25. };
  26.  
  27.  
  28.  
  29. int main()
  30. {
  31.     c C{};
  32.     C + 1;
  33.     return 0;
  34. }
Success #stdin #stdout 0s 15232KB
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stdin
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Standard input is empty
stdout
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ddd
https://ideone.com/dUth6H
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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