RE: [Dev-C++] trying to open a specific folder

[Reid T. <Rei...@at...>]

Patel, Nilesh M wrote:
> Curious to know if someone knows how to open a folder (abc
> folder) and then search for a particular file (xyz.txt file) in C++.
>=20
> I do know how use the I/O functionality for files in C++, but
> I am having difficulty with opening a folder. Any help would
> be most appreciated. Thanks.
>=20
>
from

http://www.informit.com/guides/content.asp?g=3Dcplusplus&seqNum=3D245&rl=3D=
1

Standard C++ doesn't have a library for manipulating directories. The
closest thing you can get is Boost's filesystem library. However, most
implementations nowadays support the quasi-standard <dirent.h> and
<dir.h> libraries. These libraries, originally written in C, enable you
to list the files in a directory, change the current directory, create a
new directory and delete an existing directory.

#include <errno.h>
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>

int main()
{
 DIR *pdir;
 struct dirent *pent;

 pdir=3Dopendir("."); //"." refers to the current dir
 if (!pdir){
 printf ("opendir() failure; terminating");
 exit(1);
 }
 errno=3D0;
 while ((pent=3Dreaddir(pdir))){
  printf("%s", pent->d_name);
 }
 if (errno){
 printf ("readdir() failure; terminating");
 exit(1);
 }
 closedir(pdir);
}

reid