Linux System Programming _1_ folder read (implement simple LS command)

There is nothing to spare. Simply write and implement the simple LS command:

|  1 #include <stdio.h>|  2 #include <stdlib.h>|  3 #include <dirent.h>|  4 #include <string.h>|  5|  6 int main (int argc, char **argv) |  7 {|  8 DIR *pdir;| 9 struct Dirent *stdir;| Ten int flag = 0;| 11| if (argc > 2) | ("Usage:./ls or./ls xxx\n"); | Exit (-1); | 16}| if (argc = = 1) | {| flag = 1;| if (Pdir = Opendir (".")) = = NULL) | {|-printf ("Open dir error!\n"); | + Exit (-1); | 24}| 25}| 26| if (!flag) | {| (Pdir = opendir (argv[1)) = = NULL) | []-printf ("Open dir error!\n"); | Exit (-1); | 33}| 34}| 35| (Stdir = Readdir (pdir)) = NULL) | PNS {| strcmp (Stdir->d_name, ".") = = 0 | | strcmp (Stdir->d_name, "..") = = 0) | e;| -printf ("%s\n", stdir->d_name); | 41}| 42|    43 Closedir (pdir); | 44| Return 0;| 46}

Function:

./ls--list files under current folder

./ls xxx--lists the files under the specified folder

Ignore. With.. Two of folders.

Linux System Programming _1_ folder read (implement simple LS command)