ex05-04-1.c

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


int main() {
    DIR *dirp;
    struct dirent *dentry;
    if ((dirp = opendir(".")) == NULL) exit(1);
    while (dentry = readdir(dirp)) {
        if (dentry->d_ino != 0) printf("%s\n", dentry->d_name);
    }
    rewinddir(dirp);
    printf("removed files..\n");
    while (dentry = readdir(dirp)) {
        if (dentry->d_ino == 0) {
            printf("%s\n", dentry->d_name);
        }
    }
    closedir(dirp);
}