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  1.     #include <iostream>
  2.  
  3.     struct Animal {
  4.         virtual const char* say() { return "???"; }
  5.     };
  6.  
  7.     struct Fox : public Animal {
  8.         const char* say() override { return "A ring ding ding"; }
  9.     };
  10.  
  11.     struct Cat : public Animal {
  12.         const char* say() override { return "Meow"; }
  13.     };
  14.  
  15.     void whatDoesItSay(const char* name, Animal* animal) {
  16.         std::cout << "The " << name << " says " << animal->say() << ".\n";
  17.     }
  18.  
  19.     int main() {
  20.         Cat cat;
  21.         Fox fox;
  22.         whatDoesItSay("cat", &cat);
  23.         whatDoesItSay("fox", &fox);
  24.     }
  25.  
Success #stdin #stdout 0s 3340KB
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stdin
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Standard input is empty
stdout
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The cat says Meow.
The fox says A ring ding ding.
https://ideone.com/uOtYMv
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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