Thread: FAQ help

inthe faq there is this code

Code:

/*
 * This program displays the names of all files in the current directory.
 */

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

int main(void)
{
  DIR           *d;
  struct dirent *dir;
  d = opendir(".");
  if (d)
  {
    while ((dir = readdir(d)) != NULL)
    {
      printf("%s\n", dir->d_name);
    }

    closedir(d);
  }

  return(0);
}

could someone please explain this code to me, as I would like to use it and manipulate it, but I cant without understanding it first, and i cant seem to figure out how this whole "dir" thing works - ty

Originally Posted by sand_man

Where is the rest of the code?

My guess is, if there is more code, it's in the FAQ.

As to what it does, I'd venture the following guess:

/*
* This program displays the names of all files in the current directory.
*/

If that isn't good enough, you could always oh, I don't know, google the function. Or man it perhaps...

Quzah.

> d = opendir(".");
Think fopen() for files

> while ((dir = readdir(d)) != NULL)
Think fgets() for files

> closedir(d);
Think fclose() for files

Originally Posted by Salem

> d = opendir(".");
Think fopen() for files

> while ((dir = readdir(d)) != NULL)
Think fgets() for files

> closedir(d);
Think fclose() for files

Granted, the Unix convention is that everything is a file...but I think you meant "for directories".

Actually, I've no idea what I meant

I was trying to suggest that if you know what fopen does for a file, then it isn't too far from understanding what opendir does for a directory.

>Actually, I've no idea what I meant
That happens to me all the time.