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  1.     #include <iostream>
  2.     class Animal
  3.     {
  4.         private:
  5.             int a_CUR_food_lvl; 
  6.             int food_chain_level;
  7.             const int a_MAX_food_lvl; 
  8.             const int a_hunger_rate; 
  9.  
  10.        public:
  11.             Animal(int curr, int max, int rate, int food_chain)
  12.             : a_CUR_food_lvl(curr), a_MAX_food_lvl(max),
  13.             a_hunger_rate(rate), food_chain_level(food_chain) {}
  14.  
  15.             bool canEat(Animal& theAnimal) const
  16.             { return food_chain_level > theAnimal.food_chain_level; } 
  17.     //...
  18.     }; 
  19.  
  20.     class Carnivore : public Animal
  21.     {
  22.        public:
  23.             Carnivore(int curr, int max, int rate) : Animal(curr, max, rate, 2) {}
  24.     };
  25.  
  26.     class Herbivore : public Animal
  27.     {
  28.        public:
  29.             Herbivore(int curr, int max, int rate) : Animal(curr, max, rate, 1) {}
  30.     };
  31.  
  32.     class Insect : public Animal
  33.     {
  34.        public:
  35.             Insect(int curr, int max, int rate) : Animal(curr, max, rate, 0) {}
  36.     };
  37.  
  38.     Carnivore Wolf(150, 200, 2);
  39.     Carnivore Cheetah(75,125,2);
  40.     Herbivore Squirrel(150,200,2);
  41.  
  42.     using namespace std;
  43.  
  44.     int main()
  45.     {
  46.        cout << (Wolf.canEat(Squirrel)?"true":"false") << endl;
  47.        cout << (Squirrel.canEat(Cheetah)?"true":"false") << endl;
  48.     }
  49.  
Success #stdin #stdout 0s 3412KB
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https://ideone.com/RrQn3o
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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