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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct Light
  5. {
  6.   Light() { cout << "Light()"<<endl; }
  7.   Light(const Light&) { cout << "Light(const Light&)"<<endl; }
  8.   ~Light() { cout << "~Light()"<<endl; }
  9. };
  10.  
  11. struct Heavy
  12. {
  13.   Heavy() { cout << "Heavy()"<<endl; }
  14.   Heavy(const Heavy&) { cout << "Heavy(const Heavy&)"<<endl; }
  15.   //Heavy(const Light&) { cout << "Heavy(const Light&)"<<endl; }
  16.   ~Heavy() { cout << "~Heavy()"<<endl; }
  17.  
  18.   operator Light() { cout << "operator Light()"<<endl; Light l; return l; }
  19. };
  20.  
  21. Light ternary(Heavy* h)
  22. {
  23.   cout << "ternary"<<endl;
  24.   return h ? *h : Light();
  25. }
  26.  
  27.  
  28. int main()
  29. {
  30.   Heavy h;
  31.   Light l = ternary(&h);
  32.  
  33.   cout << "return"<<endl;
  34.   return 0;
  35. }
  36.  
Success #stdin #stdout 0s 3100KB
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stdin
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Standard input is empty
stdout
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Heavy()
ternary
operator Light()
Light()
return
~Light()
~Heavy()
https://ideone.com/Wu6WJj
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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