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

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

 pdir=opendir("."); //"." refers to the current dir
 if (!pdir){
 printf ("opendir() failure; terminating");
 exit(1);
 }
 errno=0;
 while ((pent=readdir(pdir))){
  printf("%s\n", pent->d_name);
 }
 if (errno){
 printf ("readdir() failure; terminating");
 exit(1);
 }
 closedir(pdir);
}