Как определить разрядность процессора на c++ в windows?

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#include 
#include 

int main()
{
    SYSTEM_INFO sysinfo;
    GetSystemInfo(&sysinfo);

    std::cout << "Processor architecture: ";
    if (sysinfo.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64)
    {
        std::cout << "64-bit
";
    }
    else if (sysinfo.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_INTEL)
    {
        std::cout << "32-bit
";
    }
    else
    {
        std::cout << "Unknown
";
    }

    return 0;
}