/* Copyright 2005 Daniel Cer (daniel.cer@cs.colorado.edu)

This work is licensed under the Creative Commons Attribution-NonCommercial-
ShareAlike License. To view a copy of this license, visit 
http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to 
Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 
94105, USA.
*/

#include <stdio.h>
#include <dirent.h> /* uses POSIX functionality - not 'Standard' C */

int list_directory(char *dir_path) { DIR *dir_h; struct dirent *entry;
   if ((dir_h = opendir(dir_path)) == NULL) return 0;

   printf("Contents of \"%s\":\n", dir_path);   
   for ( ; entry = readdir(dir_h); ) printf("\t%s\n", entry->d_name);
   closedir(dir_h);

   return 1;
}

int main(int argc, char *argv[]) {
  if (argc != 2) {
    fprintf(stderr, "Usage:\n\t%s (directory to list)\n", argv[0]);
    return -1;
  }   

  if (!list_directory(argv[1])) {
    perror(argv[0]); return -1;
  }
  return 0;
}