#include <chrono>
#include <iostream>

int main()
{
    {
        const auto Start = std::chrono::system_clock::now();
        for (int i = 0; i < 1'000'000; ++i)
        {
            std::cout << "Hello World\n";
        }
        const auto End = std::chrono::system_clock::now();
        const std::chrono::duration<double> Duration = End - Start;
        std::cout << "std::cout Time: " << std::chrono::duration_cast<std::chrono::microseconds>(Duration).count() << " us\n";
    }

    {
        const auto Start = std::chrono::system_clock::now();
        for (int i = 0; i < 1'000'000; ++i)
        {
            printf("Hello World\n");
        }
        const auto End = std::chrono::system_clock::now();
        const std::chrono::duration<double> Duration = End - Start;
        std::cout << "printf Time: " << std::chrono::duration_cast<std::chrono::microseconds>(Duration).count() << " us\n";
    }
}