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Question #196 Difficulty:
According to the C++17 standard, what is the output of this program?
#include <iostream>
namespace x {
class C {};
void f(const C& i) {
std::cout << "1";
}
}
namespace y {
void f(const x::C& i) {
std::cout << "2";
}
}
int main() {
f(x::C());
}
Hint:
Argument-dependent name lookup, aka Koenig lookup, applies.
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