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  1. #include <iostream>
  2. #include <new> // For placement new
  3.  
  4. // Example class
  5. class MyClass {
  6. public:
  7.     MyClass() { std::cout << "Constructor called." << std::endl; }
  8.     ~MyClass() { std::cout << "Destructor called." << std::endl; }
  9. };
  10.  
  11. int main() {
  12.     std::cout << "Example 1: Explicit Destructor Call" << std::endl;
  13.     {
  14.         MyClass obj;
  15.         obj.~MyClass(); // Explicitly calling the destructor
  16.         std::cout << "End of scope. Destructor will be called again." << std::endl;
  17.     } // Destructor will be called again here
  18.  
  19.     std::cout << "\nExample 2: Placement New with Explicit Destructor Call" << std::endl;
  20.     {
  21.         char buffer[sizeof(MyClass)];
  22.         MyClass* obj = new (buffer) MyClass(); // Placement new
  23.         obj->~MyClass(); // Explicitly calling the destructor
  24.         std::cout << "End of scope. No additional destructor call." << std::endl;
  25.     }
  26.  
  27.     return 0;
  28. }
  29.  
Success #stdin #stdout 0.01s 5320KB
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Example 1: Explicit Destructor Call
Constructor called.
Destructor called.
End of scope. Destructor will be called again.
Destructor called.

Example 2: Placement New with Explicit Destructor Call
Constructor called.
Destructor called.
End of scope. No additional destructor call.
https://ideone.com/3zohu1
language:
C++ (gcc 8.3)
created:
10 days ago
visibility:
public

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