Question

I need to develop a C program that can recursively navigate the current working directory and output the information (similar to what "ls -l" does). I cant hard code path names or use system() calls.

Answer 1

Please find the code along with comments below.

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

void file_list(const char *curd)
{
struct dirent *dr;
DIR *dir = opendir(curd);

if (!dir)
printf("Error!"); // print error if there is no directory

while ((dr = readdir(dir)) != NULL)
{   
printf("%s\n",dr->d_name); // print the sub-directories and files
}
  
closedir(dir); // Closing the directory
}

int main()
{

char cwd[PATH_MAX];
if (getcwd(cwd, sizeof(cwd)) != NULL) { // Current directory value
printf("Current working dir: %s\n", cwd);
} else {
perror("getcwd() error"); // Print error if current directory is not found
return 1;
}
printf("List of all files and sub-directories at current directory are :\n ");
file_list(cwd);
return 0;
}

OUTPUT: