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Question #184 Difficulty: 2

According to the C++17 standard, what is the output of this program? 

    #include <iostream>

struct Base {
  void f(int) { std::cout << "i"; }
};

struct Derived : Base {
  void f(double) { std::cout << "d"; }
};

int main() {
  Derived d;
  int i = 0;
  d.f(i);
}

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