readdir « directory « C File Q&A

1. List regular files only (without directory) problem    stackoverflow.com

Do you know why certain files are not listed by this program, even if they are "regular"?:

#include <stdio.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <dirent.h>

int main(void) {
  DIR *dh = opendir("./"); // directory ...

2. Why touching "d_name" makes calls to readdir() fail?    stackoverflow.com

I'm trying to write a little helper for Windows which eventually will accept a file extension as an argument and return the number of files of that kind in the current ...