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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6. class A {
  7. public:
  8.     A(int i = 0) {   cout << "A ctor" << endl; }
  9.     ~A() { cout << "A dtor" << endl; }
  10. };
  11.  
  12. int main() {
  13.     vector<A> v;
  14.     cout << "after vector created" << endl;
  15.     v.emplace_back();
  16.     cout << "after one A added" << endl;
  17. }
Success #stdin #stdout 0s 3232KB
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stdin
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Standard input is empty
stdout
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after vector created
A ctor
after one A added
A dtor
https://ideone.com/RA33zH
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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