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  1. #include <iostream>
  2. #include <memory>
  3. #include <string>
  4. #include <vector>
  5. using namespace std;
  6.  
  7. class Test {
  8. private:
  9.     string _name;
  10.     vector<shared_ptr<Test>> _list;
  11. public:
  12.     explicit Test(const string& S) : _name(S) { }
  13.  
  14.     string to_string() const {
  15.         string s("[");
  16.         s += _name;
  17.  
  18.         for (auto const& p : _list) {
  19.             s += ",";
  20.             s += p->to_string();
  21.         }
  22.  
  23.         s += "]";
  24.         return s;
  25.     }
  26.  
  27.     shared_ptr<Test> add(const string& S) {
  28.         auto p = make_shared<Test>(S);
  29.         _list.push_back(p);
  30.         return p;
  31.     }
  32. };
  33.  
  34. int main() {
  35.     auto x = make_shared<Test>("one");
  36.     x->add("two");
  37.     auto y = x->add("three");
  38.     y->add("four");
  39.  
  40.     cout << y->to_string() << '\n';
  41.     cout << x->to_string() << '\n';
  42. }
  43.  
Success #stdin #stdout 0s 3476KB
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Standard input is empty
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[three,[four]]
[one,[two],[three,[four]]]
https://ideone.com/k9uFfJ
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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