//依賴的標頭檔案
#include <direct.h>
##include <string>
#include <io.h>

int CreateMultiFileList(char *strDirPath)
{
	if (strlen(strDirPath) > MAX_PATH)
	{
		return -1;
	}
	int ipathLength = strlen(strDirPath);
	int ileaveLength = 0;
	int iCreatedLength = 0;
	char szPathTemp[MAX_PATH] = { 0 };
	for (int i = 0; (NULL != strchr(strDirPath + iCreatedLength, '\\')); i++)
	{
		ileaveLength = strlen(strchr(strDirPath + iCreatedLength, '\\')) - 1;
		iCreatedLength = ipathLength - ileaveLength;
		strncpy(szPathTemp, strDirPath, iCreatedLength);
		mkdir(szPathTemp);
	}
	if (iCreatedLength < ipathLength)
	{
		mkdir(strDirPath);
	}
	return 0;
}

int main(int argc, char *argv[])
{
  string strSavedpath = "E:\\1\\2\\3";
  char cPath[256] = { 0 };
  sprintf(cPath, "%s", strSavedpath.c_str());
  CreateMultiFileList(cPath);
 
}
 

======================

void CreateDir(const char *dir)
{
	int m = 0, n;
	string str1, str2;
	str1 = dir;
	str2 = str1.substr(0, 2);
	str1 = str1.substr(3, str1.size());
	while (m >= 0)
	{
		m = str1.find('\\');

		str2 += '\\' + str1.substr(0, m);
       //判斷該目錄是否存在
		n = _access(str2.c_str(), 0); 
		if (n == -1)
        {
           //建立目錄檔案
          _mkdir(str2.c_str());     
	    }

		str1 = str1.substr(m + 1, str1.size());
   }
}

int main(int argc, char *argv[])
{
	char dir[] = "E:\\1\\2\\3";
	CreateDir(dir);
}