Help in Unix bash

Do not use system() function call in your program

Write a C/C++ program (a4part2.c) to do the following tasks.

(1) Your C program will change the current working directory to a4part1, and call pwd and then it will call ls function to list all the directories and files using R option.

Your C program will navigate the directory structure (as shown in Part1) to visit each subdirectory.

(2) it will list each directory entry and its type.

(3) it will list the inode of each entry with the file-type (e.g., regular file, symbolic link, etc.).

(4) as your C program navigates the directory structure, it will check whether the current directory which it visits has a subdirectory or not. If not, then it will output a message:

** folder1 - this directory does not have any subdirectory **.

a4partl folder1 folder2 file3 link4 file1 file2 a4partl folder1 folder2 file3 link4 file1 file2