[Solved] Parallel computing using threads in C++ [closed]

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This sort of problem is best solved using std::async and std::future, which can use threads or not, depending on how you use them.

int main() {
    std::cout << "Please enter an number" << std::endl;
    int x;
    std::cin >> x;
    auto f_future = std::async(std::launch::async, f, x);
    auto g_future = std::async(std::launch::async, g, x);

    //will block until f's thread concludes, or until both threads conclude, depending on how f resolves
    auto result = f_future.get() || g_future.get();
    std::cout << /*...*/ << std::endl;
}

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solved Parallel computing using threads in C++ [closed]