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Question #31 Difficulty:
According to the C++17 standard, what is the output of this program?
#include <iostream>
struct X {
X() { std::cout << "X"; }
};
struct Y {
Y(const X &x) { std::cout << "Y"; }
void f() { std::cout << "f"; }
};
int main() {
Y y(X());
y.f();
}
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