Reading the computer's serial number

SerialNumber.cpp

#include "winrt/Windows.System.Profile.SystemManufacturers.h"

using namespace winrt::Windows::System::Profile::SystemManufacturers;

int main()
{
    winrt::init_apartment();
    printf("Serial number = %ls\n", SmbiosInformation::SerialNumber().c_str());
}

This example was inspired by Raymond Chen's post.

The first two includes in Raymond's code where especially troublesome :)

Out of sheer curiosity ... why the printf ? AFAIK in no code of yours, you use std::cout ?

Mainly personal preference. Both are problematic in different ways. printf is always faster and often more concise.

True indeed. Although printf() with a lot of arguments is tedious to get right, but then those examples are rare.

fdksjfklfd

Question: Why do you omit the

winrt::init_apartment();
...
winrt::clear_factory_cache();
winrt::uninit_apartment();

or more importantly, why does he include them?