#include <stdlib.h>
#include <dirent.h>
#include <sys/types.h>
#include <stdio.h>

int main(int argc, char ** argv)
{
  DIR * dir = NULL;
  dir = opendir(argv[1]);
  struct dirent * entry;
  
  if(dir==NULL)
    {
      printf("error opening directory\n");
      exit(1);
    }

  while((entry = readdir(dir))!=NULL)
    {
      printf("%s\n",entry->d_name);
    }

  if(closedir(dir) !=0)
    {
      printf("error closing directory\n");
      exit(2);
    }

  
  
  return 0;
}