Hi, i think i have a pretty random question here and something i thought i would be able to do but unfortunately im struggling. I have an example I have found on the msdn website. It works fine however i want to move all the code so that it just works in main without having the passing between the functions. I will paste the example below. I dont expect anyone to do it for me but i would appreciate advice on how to go about this. I know it mite sound strange doing this and not the best way to go about things but i need to attempt this. I think by doing this it will imporve my coding knowledge
* The code of interest is in the subroutine GetDriveGeometry. The
code in main shows how to interpret the results of the call. */
#include <windows.h>
#include <winioctl.h>
#include <stdio.h>
BOOL GetDriveGeometry(DISK_GEOMETRY *pdg)
{
HANDLE hDevice; // handle to the drive to be examined
BOOL bResult; // results flag
DWORD junk; // discard results
hDevice = CreateFile(TEXT("\\\\.\\PhysicalDrive0"), // drive
0, // no access to the drive
FILE_SHARE_READ | // share mode
FILE_SHARE_WRITE,
NULL, // default security attributes
OPEN_EXISTING, // disposition
0, // file attributes
NULL); // do not copy file attributes
if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive
{
return (FALSE);
}
bResult = DeviceIoControl(hDevice, // device to be queried
IOCTL_DISK_GET_DRIVE_GEOMETRY, // operation to perform
NULL, 0, // no input buffer
pdg, sizeof(*pdg), // output buffer
&junk, // # bytes returned
(LPOVERLAPPED) NULL); // synchronous I/O
CloseHandle(hDevice);
return (bResult);
}
int main(int argc, char *argv[])
{
DISK_GEOMETRY pdg; // disk drive geometry structure
BOOL bResult; // generic results flag
ULONGLONG DiskSize; // size of the drive, in bytes
bResult = GetDriveGeometry (&pdg);
if (bResult)
{
printf("Cylinders = %I64d\n", pdg.Cylinders);
printf("Tracks/cylinder = %ld\n", (ULONG) pdg.TracksPerCylinder);
printf("Sectors/track = %ld\n", (ULONG) pdg.SectorsPerTrack);
printf("Bytes/sector = %ld\n", (ULONG) pdg.BytesPerSector);
DiskSize = pdg.Cylinders.QuadPart * (ULONG)pdg.TracksPerCylinder *
(ULONG)pdg.SectorsPerTrack * (ULONG)pdg.BytesPerSector;
printf("Disk size = %I64d (Bytes) = %I64d (Gb)\n", DiskSize,
DiskSize / (1024 * 1024 * 1024));
}
else
{
printf ("GetDriveGeometry failed. Error %ld.\n", GetLastError ());
}
return ((int)bResult);
}thankyou
