#include <stdio.h>
#include <syspes.h>
#include <unistd.h>
#include <sys/stat.h>
#include <dirent.h>
#include <string.h>
int main(int argc,char* argv[])
{
     DIR* dir = opendir(".");
     struct dirent* ent=NULL;
     while((ent = readdir(dir)))
     {
         if((ent->d_type == 4||ent->d_type == 8)&&ent->d_name[0]!='.')
         printf("%s  ",ent->d_name);
     }
     closedir(dir);
     puts("");
     return 0;
}