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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ## readdir ## 讀取目錄 ### 相關函數 ### open,opendir,closedir,rewinddir,seekdir,telldir,scandir ### 表頭文件 ### ``` #include<sys/types.h> #include<dirent.h> ``` ### 定義函數 ### ``` struct dirent *readdir(DIR *dir); ``` ### 函數說明 ### readdir()返回參數dir目錄流的下個目錄進入點。 結構dirent定義如下 ``` struct dirent { ino_t d_ino; ff_t d_off; signed short int d_reclen; unsigned char d_type; har d_name[256; }; ``` d_ino 此目錄進入點的inode d_off 目錄文件開頭至此目錄進入點的位移 d_reclen _name的長度,不包含NULL字符 d_type d_name 所指的文件類型 d_name 文件名 ### 返回值 ### 成功則返回下個目錄進入點。有錯誤發生或讀取到目錄文件尾則返回NULL。 ### 附加說明 ### EBADF參數dir為無效的目錄流。 ### 范例 ### ``` #include<sys/types.h> #include<dirent.h> #include<unistd.h> main() { DIR * dir; struct dirent * ptr; int i; dir =opendir(“/etc/rc.d”); while((ptr = readdir(dir))!=NULL) { printf(“d_name: %s\n”,ptr->d_name); } closedir(dir); } ``` ### 執行 ### ``` d_name:. d_name:.. d_name:init.d d_name:rc0.d d_name:rc1.d d_name:rc2.d d_name:rc3.d d_name:rc4.d d_name:rc5.d d_name:rc6.d d_name:rc d_name:rc.local d_name:rc.sysinit ```
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                              哎呀哎呀视频在线观看