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Question #42 Difficulty:
According to the C++23 standard, what is the output of this program?
#include <initializer_list>
#include <iostream>
struct A {
A() { std::cout << "1"; }
A(int) { std::cout << "2"; }
A(std::initializer_list<int>) { std::cout << "3"; }
};
int main(int argc, char *argv[]) {
A a1;
A a2{};
A a3{ 1 };
A a4{ 1, 2 };
}
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