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Question #297 Difficulty: 2

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

    #include <future>
#include <iostream>

int main()
{
    auto f = std::async(std::launch::async, [](){ throw 0; });
    try {
        f.wait();
    } catch (...)
    {
        std::cout << 1;
    }
    std::cout << 2;
}

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