Получить информацию об оперативной памяти и информацию об одном из жёстких дисков

#include <windows.h>
#include <iostream>
 
int main(int argc, char *argv[])
{
    using namespace std;
 
    setlocale(LC_ALL, ".1251");
 
    MEMORYSTATUSEX statex;
    statex.dwLength = sizeof (statex);
 
    GlobalMemoryStatusEx (&statex);
 
    cout << "ОЗУ " << statex.ullTotalPhys / (1024 * 1024) << " MБ\n";
 
    HANDLE hVolume = CreateFileA("\\\\.\\C:", GENERIC_READ,
        FILE_SHARE_READ | FILE_SHARE_WRITE,
        NULL, OPEN_EXISTING, 0, NULL);
 
    GET_LENGTH_INFORMATION li;
    DWORD dwBytesReturned;
 
    DeviceIoControl(hVolume, IOCTL_DISK_GET_LENGTH_INFO, NULL, 0, &li,
        sizeof (GET_LENGTH_INFORMATION), &dwBytesReturned, NULL);
 
    cout << "Том C: " << li.Length.QuadPart / (1024 * 1024 * 1024) << " ГБ\n";
 
    CloseHandle(hVolume);
 
    system("PAUSE");
    return 0;
}

#include <windows.h>
#include <stdio.h>
#include <conio.h>
int main()
{
 
DWORD FreeBytesAvailable;
DWORD TotalNumberOfBytes;
DWORD TotalNumberOfFreeBytes;
DWORD werd;
GetDiskFreeSpaceEx(0, 
(PULARGE_INTEGER)&FreeBytesAvailable, 
(PULARGE_INTEGER)&TotalNumberOfBytes, 
(PULARGE_INTEGER)&TotalNumberOfFreeBytes
);
printf("Free memory %lf \n",TotalNumberOfFreeBytes/1024/1024/1024);
printf("Total memory %lf Gb\n",TotalNumberOfBytes/1024/1024/1024);
getchar();
}

#include <windows.h>
#include <stdio.h>
#include <conio.h>
 
#define DIV 1024
#define WIDTH 7
int main()
{
MEMORYSTATUS statex;
 
GlobalMemoryStatus (&statex);
 
printf ("%ld percent of memory in use   \n",statex.dwMemoryLoad);
printf ("%ld sizeof  bytes\n",statex.dwLength);
printf ("%*ld  %s bytes of physical memory \n",WIDTH, statex.dwTotalPhys/DIV);
printf ("%*ld  %s free physical memory bytes\n",WIDTH, statex.dwAvailPhys/DIV);
printf ("%*ld  %s bytes of paging file \n",WIDTH, statex.dwTotalPageFile/DIV);
printf ("%*ld  %s free bytes of paging file  \n",WIDTH, statex.dwAvailPageFile/DIV);
printf ("%*ld  %s user bytes of address space \n",WIDTH, statex.dwTotalVirtual/DIV);
printf ("%*ld  %s free user bytes \n",WIDTH, statex.dwAvailVirtual/DIV);
 
 
_getch();
return 0;
}