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                ## rename ## 更改文件名稱或位置 ### 相關函數 ### link,unlink,symlink ### 表頭文件 ### ``` #include<stdio.h> ``` ### 定義函數 ### ``` int rename(const char *oldpath, const char *newpath); ``` ### 函數說明 ### rename()會將參數oldpath 所指定的文件名稱改為參數newpath所指的文件名稱。若newpath所指定的文件已存在,則會被刪除。 ### 返回值 ### 執行成功則返回0,失敗返回-1,錯誤原因存于errno ### 范例 ### ``` /* 設計一個DOS下的rename指令rename 舊文件名新文件名*/ #include <stdio.h> void main(int argc,char **argv) { if(argc<3){ printf(“Usage: %s old_name new_name\n”,argv[0]); return; } printf(“%s=>%s”,argc[1],argv[2]); if(rename(argv[1],argv[2]<0) printf(“error!\n”); else printf(“ok!\n”); } ```
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