List directory recursively on Linux system.

list-dir.c

/*
 * List directory recursively on Linux system.
 * Build: gcc list-dir.c -o list-dir.out
 * Run: ./list-dir.out
 */

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

int main (void) {
	DIR *dp;
	struct dirent *ep;
	dp = opendir ("./");
	if (dp != NULL) {
		while ((ep = readdir(dp))) {
			fprintf(stdout, "%d %s\n", ep->d_type, ep->d_name);
		}
		(void) closedir (dp);
	}
	else
		fprintf(stderr, "Couldn't open the directory");
	return 0;
}