有什么方法可以列出所有可用的驱动器及其文件夹内容。即我想访问所有驱动器，然后是每个驱动器中的文件夹，然后是每个文件夹的子文件夹，依此类推，直到每个驱动器中的最后一个可能级别。

C 语言 .. Windows 平台 .. 我试过将字母数组与 system() 一起使用，但无法获取文件和文件夹的名称。

最佳答案

这不是“标准 C”(即:ANSI、C89、C99 等)，但它对操作系统特定调用的使用最少(即:只是“windows.h”，而不是 MS .NET 或 MFC 技术).这是您尝试做的事情的极简主义方法。获得所有驱动器盘符的列表后，您需要递归查询每个驱动器的目录列表。

这是 C 和 C++ 的混合体，但无论如何您都可能会使用免费版本的 Visual Studio 来构建它。

代码 list - 获取驱动器号

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


int main()
{
    char buf[255];
    // get the drive letters as a set of strings
    int sz = GetLogicalDriveStrings(sizeof(buf), buf);
    if( sz > 0)
    {
        // buf now contains a list of all the drive letters.  Each drive letter is
        // terminated with '\0' and the last one is terminated by two consecutive '\0' bytes.
        char* p1 = buf;
        char* p2;
        while( *p1 != '\0' && (p2 = strchr(p1,'\0')) != NULL )
        {
            printf("%s\n", p1);
            p1 = p2+1;
        }
    }
    else
    {
        // Oops! something went wrong so display the error message
        DWORD dwError = GetLastError();
        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, 0, dwError, 0, buf, sizeof(buf), 0);
        printf("%s\n", buf);

    }
}

代码 list - 目录 list

#include <windows.h>
#include <tchar.h> 
#include <stdio.h>
#include <strsafe.h>
#pragma comment(lib, "User32.lib")

void DisplayErrorBox(LPTSTR lpszFunction);

int _tmain(int argc, TCHAR *argv[])
{
   WIN32_FIND_DATA ffd;
   LARGE_INTEGER filesize;
   TCHAR szDir[MAX_PATH];
   size_t length_of_arg;
   HANDLE hFind = INVALID_HANDLE_VALUE;
   DWORD dwError=0;

   // If the directory is not specified as a command-line argument,
   // print usage.

   if(argc != 2)
   {
      _tprintf(TEXT("\nUsage: %s <directory name>\n"), argv[0]);
      return (-1);
   }

   // Check that the input path plus 3 is not longer than MAX_PATH.
   // Three characters are for the "\*" plus NULL appended below.

   StringCchLength(argv[1], MAX_PATH, &length_of_arg);

   if (length_of_arg > (MAX_PATH - 3))
   {
      _tprintf(TEXT("\nDirectory path is too long.\n"));
      return (-1);
   }

   _tprintf(TEXT("\nTarget directory is %s\n\n"), argv[1]);

   // Prepare string for use with FindFile functions.  First, copy the
   // string to a buffer, then append '\*' to the directory name.

   StringCchCopy(szDir, MAX_PATH, argv[1]);
   StringCchCat(szDir, MAX_PATH, TEXT("\\*"));

   // Find the first file in the directory.

   hFind = FindFirstFile(szDir, &ffd);

   if (INVALID_HANDLE_VALUE == hFind) 
   {
      DisplayErrorBox(TEXT("FindFirstFile"));
      return dwError;
   } 

   // List all the files in the directory with some info about them.

   do
   {
      if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
      {
         _tprintf(TEXT("  %s   <DIR>\n"), ffd.cFileName);
      }
      else
      {
         filesize.LowPart = ffd.nFileSizeLow;
         filesize.HighPart = ffd.nFileSizeHigh;
         _tprintf(TEXT("  %s   %ld bytes\n"), ffd.cFileName, filesize.QuadPart);
      }
   }
   while (FindNextFile(hFind, &ffd) != 0);

   dwError = GetLastError();
   if (dwError != ERROR_NO_MORE_FILES) 
   {
      DisplayErrorBox(TEXT("FindFirstFile"));
   }

   FindClose(hFind);
   return dwError;
}


void DisplayErrorBox(LPTSTR lpszFunction) 
{ 
    // Retrieve the system error message for the last-error code

    LPVOID lpMsgBuf;
    LPVOID lpDisplayBuf;
    DWORD dw = GetLastError(); 

    FormatMessage(
        FORMAT_MESSAGE_ALLOCATE_BUFFER | 
        FORMAT_MESSAGE_FROM_SYSTEM |
        FORMAT_MESSAGE_IGNORE_INSERTS,
        NULL,
        dw,
        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
        (LPTSTR) &lpMsgBuf,
        0, NULL );

    // Display the error message and clean up

    lpDisplayBuf = (LPVOID)LocalAlloc(LMEM_ZEROINIT, 
        (lstrlen((LPCTSTR)lpMsgBuf)+lstrlen((LPCTSTR)lpszFunction)+40)*sizeof(TCHAR)); 
    StringCchPrintf((LPTSTR)lpDisplayBuf, 
        LocalSize(lpDisplayBuf) / sizeof(TCHAR),
        TEXT("%s failed with error %d: %s"), 
        lpszFunction, dw, lpMsgBuf); 
    MessageBox(NULL, (LPCTSTR)lpDisplayBuf, TEXT("Error"), MB_OK); 

    LocalFree(lpMsgBuf);
    LocalFree(lpDisplayBuf);
}

引用资料

1. 列出 Windows 逻辑驱动器号，2014 年 8 月 1 日访问， <http://www.daniweb.com/software-development/c/code/237803/list-windows-logical-drive-letters>
2. 列出目录中的文件，2014 年 8 月 1 日访问， <http://msdn.microsoft.com/en-us/library/windows/desktop/aa365200%28v=vs.85%29.aspx>

关于c - 如何获取C中所有驱动器的列表，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/25085605/