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  1. #include <iostream>
  2. #include <vector>
  3. #include <memory>
  4.  
  5. class Animal
  6. {
  7. protected:
  8.     int tip;
  9.     std::string name;
  10.     int age;
  11.  
  12. public:
  13.     Animal(int t, std::string n, int a): tip(t), name(n), age(a) {}
  14.     virtual ~Animal() {}
  15.  
  16.     virtual void print(std::ostream& os) const
  17.     {
  18.         os << "Name: " << name << std::endl;
  19.         os << "Age: " << age << std::endl;
  20.     }
  21.  
  22.     friend std::ostream& operator<<(std::ostream& os, const Animal& a)
  23.     {
  24.         a.print(os);
  25.         return os;
  26.     }
  27. };
  28.  
  29. class Cat : public Animal
  30. {
  31.     std::string race;
  32.     std::string pref_food;
  33.  
  34. public:
  35.     Cat(int t = 0, std::string n = "", int a = 0, std::string r = "", std::string mnprf = ""):
  36.         Animal(t, n, a), race(r), pref_food(mnprf) {}
  37.  
  38.     void print(std::ostream& os) const override
  39.     {
  40.         Animal::print(os);
  41.         os << "race: " << race << std::endl;
  42.         os << "Fav food: " << pref_food << std::endl;
  43.     }
  44. };
  45.  
  46. class Dog : public Animal
  47. {
  48.     std::string disease;
  49.     std::string master;
  50.  
  51. public:
  52.     Dog(int t = 1, std::string n = "", int a = 0, std::string b = "", std::string s = ""):
  53.         Animal(t, n, a), disease(b), master(s) {}
  54.  
  55.     void print(std::ostream& os) const override
  56.     {
  57.         Animal::print(os);
  58.         os << "disease: " << disease << std::endl;
  59.         os << "master: " << master << std::endl;
  60.     }
  61. };
  62.  
  63. template<typename T>
  64. void add(std::vector<std::shared_ptr<Animal>> &vec, const T &a)
  65. {
  66.     auto newptr = std::make_shared<T>(a);
  67.     vec.push_back(newptr);
  68. }
  69.  
  70. int main()
  71. {
  72.     std::vector<std::shared_ptr<Animal>> Animals;
  73.  
  74.     Dog d(1,"Rex", 12, "idk", "Oscar");
  75.     Cat c(0,"Meaw", 11, "Sfinx", "Catfood");
  76.     add(Animals, d);
  77.     add(Animals, c);
  78.  
  79.     /* alternatively:
  80.     Animals.push_back(std::make_shared<Dog>(1,"Rex", 12, "idk", "Oscar"));
  81.     Animals.push_back(std::make_shared<Cat>(0,"Meaw", 11, "Sfinx", "Catfood"));
  82.     */
  83.  
  84.     for(auto &i: Animals)
  85.     {
  86.         std::cout << *i;
  87.     }
  88.  
  89.     return 0;
  90. }
Success #stdin #stdout 0s 4524KB
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stdin
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Standard input is empty
stdout
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Name: Rex
Age: 12
disease: idk
master: Oscar
Name: Meaw
Age: 11
race: Sfinx
Fav food: Catfood
https://ideone.com/haplMY
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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