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                ## alphasort ## 依字母順序排序目錄結構 ### 相關函數 ### scandir,qsort ### 表頭文件 ### ``` #include<dirent.h> ``` ### 定義函數 ### ``` int alphasort(const struct dirent **a, const struct dirent **b); ``` ### 函數說明 ### alphasort()為scandir()最后調用qsort()函數時傳給qsort()作為判斷的函數,詳細說明請參考scandir()及qsort()。 ### 返回值 ### 參考qsort()。 ### 范例 ### ``` /* 讀取/目錄下所有的目錄結構,并依字母順序排列*/ main() { struct dirent **namelist; int i,total; total = scandir(“/”,&namelist ,0,alphasort); if(total <0) perror(“scandir”); else{ for(i=0;i<total;i++) printf(“%s\n”,namelist[i]->d_name); printf(“total = %d\n”,total); } } ``` ### 執行 ### ``` .. .gnome .gnome_private ErrorLog Weblog bin boot dev dosc dosd etc home lib lost+found misc mnt opt proc root sbin tmp usr var total = 24 ```
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