Enumerating all available drive letters in Windows

Question

I want to enumerate all available drive letters (which aren\'t already taken) in Windows using VC++.

How can I do this?

Answer 1

std::vector getListOfDrives() {
    std::vector arrayOfDrives;
    char* szDrives = new char[MAX_PATH]();
    if (GetLogicalDriveStringsA(MAX_PATH, szDrives));
    for (int i = 0; i < 100; i += 4)
        if (szDrives[i] != (char)0) 
            arrayOfDrives.push_back(std::string{szDrives[i],szDrives[i+1],szDrives[i+2]});
    delete[] szDrives;
    return arrayOfDrives;
}

returns a vector of drives e.g. C:\D:\E:\F:\

std::vector drives = getListOfDrives();

for (std::string currentDrive : drives) {
    std::cout << currentDrive << std::endl;
}

enumerateing over them