程式碼：

 1 //This is c program code!
 2 /* *=+=+=+=+* *** *=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=
 3   * 文件資訊: *** :~/WORKM/stutyCode/cCode/recipesProblemSolution/chapter06/test6_15.c
 4   * 版權宣告: *** :(魎魍魅魑)MIT
 5   * 聯絡信箱: *** :[email protected]
 6   * 建立時間: *** :2020年11月21日的下午07:31
 7   * 文件用途: *** :資料結構與演算法分析-c語言描述
 8   * 作者資訊: *** :guochaoxxl(
 
http://cnblogs.com/guochaoxxl)
 9   * 修訂時間: *** :2020年第46周 11月21日 星期六 下午07:31 (第326天)
10   * 檔案描述: *** :自行新增
11  * *+=+=+=+=* *** *+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+*/
12 #include <stdio.h>
13 
14 int main(int argc, char **argv)
15 {
16     char ch;
17     printf("please select operation: r or d: 
 
");
18     scanf("%c", &ch);
19     int tmp = getchar();                                                                
20     if(ch == 'r'){
21         int ren = rename("kolkata.txt", "city.dat");
22         if(0 == ren){
23             puts("Operation of renaming a file is successful.");
24         }else
 
{
25             puts("Operation of renaming a file is failed!");
26         }
27     }   
28         
29     if(ch == 'd'){
30         int rem = remove("city.dat");
31         if(0 == rem){
32             puts("Operation of deletion a file is successful.");
33         }else{
34             puts("Operation of deletion a file is failed!");
35         }
36     } 
37 
38     return 0;
39 }