Expert in C language

a program that opens a directory, parses each directory entry, display file size and name, and recursively open subdirectories. With no argument provided, your program will open the current working directory. If an argument is provided, your program will open the directory specified. In order to create this program, you need to use the following programming APIs:

-DIR *opendir(const char *name);

-struct dirent *readdir(DIR *dirp);

-int lstat(const char *path, struct stat *buf);

Your program will keep a total of bytes used by each file and display that total at the end of your program run.

OUTPUT SHOULD LOOK SOMETHING LIKE THIS :

$ ./assn8 dir . 17371:assn8 170:Makefile 1715:assn8.c 11416:assn8.o Total file space used:30672