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Question #313 Difficulty: 3

According to the C++23 standard, what is the output of this program? 

    #include <iostream>

void f(float &&) { std::cout << "f"; }
void f(int &&) { std::cout << "i"; }

template <typename... T>
void g(T &&... v)
{
    (f(v), ...);
}

int main()
{
    g(1.0f, 2);
}

Hint:

  • The arguments in the calls to f are named rvalue references.
  • An rvalue reference can't bind to an lvalue of the same type.

Answer:

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