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  1. #include <iostream>
  2.  
  3. using namespace std;
  4. class A 
  5. {
  6. public:
  7.     int x;
  8.     A(){}
  9. };
  10.  
  11. class B 
  12. {
  13. public:
  14.     int x;
  15.     B()=default;
  16. };
  17.  
  18.  
  19. int main() 
  20. { 
  21.     int x = 5;
  22.     new(&x)A(); // Call for empty constructor, which does nothing
  23.     cout << x << endl;
  24.     new(&x)B; // Call for default constructor
  25.     cout << x << endl;
  26.     new(&x)B(); // Call for default constructor + Value initialization
  27.     cout << x << endl;
  28.     return 0; 
  29. }
Success #stdin #stdout 0s 4448KB
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https://ideone.com/XouXux
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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