C++ quiz. In the following code, where a literal is passed t

In the following code, where a literal is passed to the defined constructor, are there any errors?

struct A {
  int &a;
  A(int &b) : a(b) { }
};

int main() {
  A a(10);
  return 0;
}

Explanation

Yes, because a literal cannot be implicitly converted to a non-constant variable.

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