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  1. #include <iostream>
  2. #include <string>
  3. #include <list>
  4. using namespace std;
  5.  
  6. class test {
  7.     private:
  8.         string _name;
  9.         list<test*> _list;
  10.     public:
  11.         test(const string& S): _name(S) { this->_list.clear(); }
  12.  
  13.         const string& to_string() {
  14.             string*sp = new string("[");
  15.             *sp += this->_name;
  16.             for(test*tp: this->_list) {
  17.                 *sp += ",";
  18.                 *sp += tp->to_string();
  19.             }
  20.             *sp += "]";
  21.             return *sp;
  22.         }
  23.  
  24.         test& add(const string& S) {
  25.             test*tp = new test(S);
  26.             this->_list.push_back(tp);
  27.             return *tp;
  28.         }
  29. };
  30.  
  31. int main() {
  32.     test x("one");
  33.     x.add("two");
  34.     test& y = x.add("three");
  35.     y.add("four");
  36.     cout << y.to_string() << '\n';
  37.     cout << x.to_string() << '\n';
  38. }
Success #stdin #stdout 0s 3472KB
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Standard input is empty
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[three,[four]]
[one,[two],[three,[four]]]
https://ideone.com/dt6Myn
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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