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  1. #include <iostream>
  2.  
  3. class Child {
  4. private:
  5.   std::string name;
  6. public:
  7.   void setName(std::string name) { this->name = name; }
  8.   std::string getName() { return this->name; }
  9. };
  10.  
  11. class Parent {
  12. private:
  13.   Child child;
  14. public:
  15.   Child getChild1() { return this->child; }
  16.   Child *getChild2() { return &(this->child); }
  17.   Child &getChild3() { return this->child; }
  18. };
  19.  
  20. int main() {
  21.   Parent parent1;
  22.   parent1.getChild1().setName("ko");
  23.   std::cout << "1: " << parent1.getChild1().getName()<< std::endl;
  24.  
  25.   Parent parent2;
  26.   (parent2.getChild2())->setName("ko");
  27.   std::cout << "2: " << (parent2.getChild2())->getName()<< std::endl;
  28.  
  29.   Parent parent3;
  30.   parent3.getChild3().setName("ko");
  31.   std::cout << "3: " << parent3.getChild3().getName()<< std::endl;
  32. }
  33. /* end */
  34.  
Success #stdin #stdout 0s 3028KB
comments (?)
stdin
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Standard input is empty
stdout
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1: 
2: ko
3: ko
https://ideone.com/upFDqf
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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