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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class B {
  5. public:
  6.   B() {
  7.     cout << "B ctor" << endl;
  8.   }
  9.   ~B() {
  10.     cout << "B dtor" << endl;
  11.   }
  12. };
  13.  
  14. class A {
  15. public:
  16.   A(B b = B()) {
  17.     cout << "A ctor" << endl;
  18.   }
  19.   ~A() {
  20.     cout << "A dtor" << endl;
  21.   }
  22. };
  23.  
  24. void doTemp() {
  25.   A();
  26. }
  27.  
  28. void doStack() {
  29.   A a;
  30. }
  31.  
  32. int main() {
  33.   cout << "temporary:" << endl;
  34.   doTemp();
  35.   cout << "stack:" << endl;
  36.   doStack();
  37.  
  38.   return 0;
  39. }
Success #stdin #stdout 0s 3416KB
comments (?)
stdin
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Standard input is empty
stdout
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temporary:
B ctor
A ctor
A dtor
B dtor
stack:
B ctor
A ctor
B dtor
A dtor
https://ideone.com/fZmvAC
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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