main.c

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

int main() {
	DIR *dir = opendir("/home");
	if (readdir(dir) == NULL) {
		printf("d is NULL");
		exit(1);
	}

	if (closedir(dir) != 0) {
		printf("closedir failed");
		exit(1);
	}

	struct dirent *d = readdir(dir);
	if (d == NULL) {
		printf("d is NULL");
		exit(1);
	} else {
		printf("%s", d->d_name);
	}

	d = readdir(dir);
	if (d == NULL) {
		printf("d is NULL");
		exit(1);
	} else {
		printf("%s", d->d_name);
	}

	return 1;
}