#include <windows.h>
#include <stdio.h>

int main() {
    DWORD drives = GetLogicalDriveStringsW(0, NULL);  // ワイド文字列用の関数を使用する

    if (drives == 0) {
        fprintf(stderr, "GetLogicalDriveStringsW failed (%lu)\n", GetLastError());
        return 1;
    }

    wchar_t* buffer = (wchar_t*)malloc(drives * sizeof(wchar_t));  // ワイド文字列用のバッファを確保

    if (buffer == NULL) {
        fprintf(stderr, "Memory allocation failed\n");
        return 1;
    }

    if (GetLogicalDriveStringsW(drives, buffer)) {
        wchar_t* currentDrive = buffer;

        while (*currentDrive) {
            wprintf(L"Drive: %s\n", currentDrive);
            currentDrive += wcslen(currentDrive) + 1;
        }
    }
    else {
        fprintf(stderr, "GetLogicalDriveStringsW failed (%lu)\n", GetLastError());
    }

    free(buffer);
    return 0;
}