Reading Directory Contents

opendir(), readdir(), and closedir():

These functions are used for directory traversal.
    opendir(): Opens a directory stream.
    readdir(): Reads the next directory entry (file or subdirectory).
    closedir(): Closes the directory stream.

Example:

#include <dirent.h> 

#include <stdio.h> 

 int main() 

{ 

 DIR *dir = opendir("."); 

 if (dir) {

 struct dirent *entry; 

 printf("Current Directory Contents\n");

 while ((entry = readdir(dir)) != NULL) 

{ 

 printf("%s\n", entry->d_name); 

 } 

 closedir(dir); } 

 return 0; 

}