我希望这段代码对您有所帮助。

#include <windows.h>
#include <iostream>
#include <string>
#include <vector>
using namespace std;

string wchar_t2string(const wchar_t *wchar)
{
    string str = "";
    int index = 0;
    while(wchar[index] != 0)
    {
        str += (char)wchar[index];
        ++index;
    }
    return str;
}

wchar_t *string2wchar_t(const string &str)
{
    wchar_t wchar[260];
    int index = 0;
    while(index < str.size())
    {
        wchar[index] = (wchar_t)str[index];
        ++index;
    }
    wchar[index] = 0;
    return wchar;
}

vector<string> listFilesInDirectory(string directoryName)
{
    WIN32_FIND_DATA FindFileData;
    wchar_t * FileName = string2wchar_t(directoryName);
    HANDLE hFind = FindFirstFile(FileName, &FindFileData);

    vector<string> listFileNames;
    listFileNames.push_back(wchar_t2string(FindFileData.cFileName));

    while (FindNextFile(hFind, &FindFileData))
        listFileNames.push_back(wchar_t2string(FindFileData.cFileName));

    return listFileNames;
}

void main()
{
    vector<string> listFiles;
    listFiles = listFilesInDirectory("C:\\*.txt");
    for each (string str in listFiles)
        cout << str << endl;
}

看看这个使用win32 api的类。只需要构造一个实例，提供您想要清单的文件夹名，然后调用getNextFile方法从目录中获取下一个文件名。我认为它需要windows.h和stdio.h。

class FileGetter{
    WIN32_FIND_DATAA found; 
    HANDLE hfind;
    char folderstar[255];       
    int chk;

public:
    FileGetter(char* folder){       
        sprintf(folderstar,"%s\\*.*",folder);
        hfind = FindFirstFileA(folderstar,&found);
        //skip .
        FindNextFileA(hfind,&found);        
    }

    int getNextFile(char* fname){
        //skips .. when called for the first time
        chk=FindNextFileA(hfind,&found);
        if (chk)
            strcpy(fname, found.cFileName);     
        return chk;
    }

};

2017年更新:

在c++ 17中，现在有一种官方的方法来列出文件系统中的文件:std::filesystem。下面是Shreevardhan给出的一个很好的答案:

# include <字符串> # include < iostream > # include <文件> 命名空间fs = std::filesystem; int main () ｛ Std::string path = "/path/to/directory"; For (const auto & entry: fs::directory_iterator(path)) Std::cout << entry.path() << Std::endl; ｝

旧的回答:

在小而简单的任务中，我不使用boost，我使用direct .h。它可以作为UNIX中的标准标头使用，也可以通过Toni Ronkko创建的兼容层用于Windows。

DIR *dir;
struct dirent *ent;
if ((dir = opendir ("c:\\src\\")) != NULL) {
  /* print all the files and directories within directory */
  while ((ent = readdir (dir)) != NULL) {
    printf ("%s\n", ent->d_name);
  }
  closedir (dir);
} else {
  /* could not open directory */
  perror ("");
  return EXIT_FAILURE;
}

它只是一个小的头文件，做了大部分你需要的简单的事情，而不使用像boost这样的基于模板的大方法(无意冒犯，我喜欢boost!)

char **getKeys(char *data_dir, char* tablename, int *num_keys)
{
    char** arr = malloc(MAX_RECORDS_PER_TABLE*sizeof(char*));
int i = 0;
for (;i < MAX_RECORDS_PER_TABLE; i++)
    arr[i] = malloc( (MAX_KEY_LEN+1) * sizeof(char) );  


char *buf = (char *)malloc( (MAX_KEY_LEN+1)*sizeof(char) );
snprintf(buf, MAX_KEY_LEN+1, "%s/%s", data_dir, tablename);

DIR* tableDir = opendir(buf);
struct dirent* getInfo;

readdir(tableDir); // ignore '.'
readdir(tableDir); // ignore '..'

i = 0;
while(1)
{


    getInfo = readdir(tableDir);
    if (getInfo == 0)
        break;
    strcpy(arr[i++], getInfo->d_name);
}
*(num_keys) = i;
return arr;
}

不幸的是，c++标准并没有定义这样处理文件和文件夹的标准方法。

由于没有跨平台的方法，最好的跨平台方法是使用boost文件系统模块之类的库。

跨平台提升方法:

The following function, given a directory path and a file name, recursively searches the directory and its sub-directories for the file name, returning a bool, and if successful, the path to the file that was found. bool find_file(const path & dir_path, // in this directory, const std::string & file_name, // search for this name, path & path_found) // placing path here if found { if (!exists(dir_path)) return false; directory_iterator end_itr; // default construction yields past-the-end for (directory_iterator itr(dir_path); itr != end_itr; ++itr) { if (is_directory(itr->status())) { if (find_file(itr->path(), file_name, path_found)) return true; } else if (itr->leaf() == file_name) // see below { path_found = itr->path(); return true; } } return false; }

来源来自上面提到的boost页面。

对于Unix/Linux系统:

您可以使用opendir / readdir / closedir。

在目录中搜索条目“name”的示例代码如下: Len = strlen(name); Dirp = opendir("."); ((dp = readdir(dirp)) != NULL) 如果(dp - > d_namlen = = len & & !比较字符串(dp - > d_name,名字)){ (空白)closedir (dirp); 返回发现; ｝ (空白)closedir (dirp); 返回NOT_FOUND;

来自上述手册页的源代码。

对于基于windows的系统:

你可以使用Win32 API的FindFirstFile / FindNextFile / FindClose函数。

The following C++ example shows you a minimal use of FindFirstFile. #include <windows.h> #include <tchar.h> #include <stdio.h> void _tmain(int argc, TCHAR *argv[]) { WIN32_FIND_DATA FindFileData; HANDLE hFind; if( argc != 2 ) { _tprintf(TEXT("Usage: %s [target_file]\n"), argv[0]); return; } _tprintf (TEXT("Target file is %s\n"), argv[1]); hFind = FindFirstFile(argv[1], &FindFileData); if (hFind == INVALID_HANDLE_VALUE) { printf ("FindFirstFile failed (%d)\n", GetLastError()); return; } else { _tprintf (TEXT("The first file found is %s\n"), FindFileData.cFileName); FindClose(hFind); } }

来自上述msdn页面的源代码。

Shreevardhan的答案很有效。但是如果你想在c++14中使用它，只需要更改命名空间fs = experimental::filesystem;

也就是说,

#include <string>
#include <iostream>
#include <filesystem>

using namespace std;
namespace fs = experimental::filesystem;

int main()
{
    string path = "C:\\splits\\";
    for (auto & p : fs::directory_iterator(path))
        cout << p << endl;
    int n;
    cin >> n;
}