C++递归之获取文件列表

#include <iostream> 
#include <windows.h>
#include <string>
using namespace std;
char* str_add(char* a, char* b);
void EchoFiles(TCHAR* path,TCHAR* type);

int main() 
{
 TCHAR* path;
 TCHAR* type = "*";
 char input[MAX_PATH];
 cout << " Input Path:";
 cin >> input;
 cout << "\n You Input Path Is:" << input << endl;
 path = str_add(input,"");
 //cout << path << endl;
 EchoFiles(path,type);
 return 0;
}

char* str_add(char* a, char* b)
{
      char* t = new char[strlen(a) + strlen(b) + 1];
      static char* tmp;
      sprintf(t,"%s%s",a,b);
      tmp = t;
      return tmp;
}

void EchoFiles(TCHAR* path,TCHAR* type)
{
     
     WIN32_FIND_DATA  fInfo;
     HANDLE hFile;

     hFile = FindFirstFile(str_add(path,type),&fInfo);
     
     while(hFile != INVALID_HANDLE_VALUE)
     {
                 
        if(fInfo.dwFileAttributes == 16)
        {
           if(strcmp(fInfo.cFileName,".") != 0 && strcmp(fInfo.cFileName,"..") != 0)
           {
               TCHAR* tp = str_add(path,fInfo.cFileName);
               EchoFiles(str_add(tp,"\\"),type);
           }                
        }
        else
        {
           cout << str_add(path,fInfo.cFileName) << endl;
        }
        
        if(FindNextFile(hFile,&fInfo) == 0)
        {
           break;                                 
        }
     }
     FindClose(hFile);
     
}