Linux under Scan directory put all the plain text in the list

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/stat.h> #include < dirent.h> #include <unistd.h>const static int strarraylen=256;typedef char Stringbuffer[strarraylen];typedef    struct stringlist_t stringlist;struct stringlist_t{stringbuffer sb;    Stringlist *next;        stringlist_t () {next = 0; memset (SB, 0, sizeof (SB));    sb[0]= ' + ';        } ~stringlist_t () {stringlist *itor = this->next;            while (itor! = NULL) {This->next = itor->next;            Delete Itor;        Itor = this->next;    }}};void outputlist (Stringlist *list) {stringlist *itor = list;        while (itor! = 0) {printf ("%s\n", ITOR-&GT;SB);    Itor = itor->next; }}int scanfilestolist (char* folderpath, stringlist *filelist) {//get rid of '/' within folderpath int slen = St    Rlen (FolderPath);    if (folderpath[slen-1] = = '/') {folderpath[slen-1] = ' + '; } StRingbuffer pwd = "";    GETCWD (pwd, sizeof (PWD));        if (strncmp (FolderPath, ".", 2) = = 0) {char pwdbak[200] = "";        strcpy (Pwdbak, PWD);        ChDir (FolderPath);        memset (pwd, 0, sizeof (PWD));        GETCWD (pwd, sizeof (PWD));        strcpy (FolderPath, PWD);    strcpy (pwd, Pwdbak);    } else {chdir (folderpath);    } DIR *dir = Opendir (FolderPath);    if (dir = = NULL) {printf ("Failed to open dir <%s> \ n", FolderPath);    } struct Dirent *dt = NULL;    struct stat statbuf;        while (dt = Readdir (dir)) {if ('. ' = = Dt->d_name[0]) {continue;        } lstat (Dt->d_name, &statbuf);            if (S_isdir (Statbuf.st_mode)) {StringBuffer SB = "";            sprintf (SB, "%s/%s", FolderPath, Dt->d_name);            ChDir (SB);            Scanfilestolist (SB, fileList);        ChDir (".."); } else if (S_isreg (Statbuf.st_mode)) {//addfiles to list stringlist *tmp=newStringlist;            sprintf (TMP-&GT;SB, "%s/%s", FolderPath, Dt->d_name);            tmp->next=filelist->next;        filelist->next=tmp;    }} chdir (PWD); return 0;}

Linux scans the directory to list all plain text