C ++ - 将文件复制到所有子目录(C++ - Copying a file to all sub directories)

 我正在尝试创建一个用于教育目的的程序，该程序应该能够将.exe的同一目录中的一个文件（任何扩展名，文件名永远不会更改）复制到主目录中的所有目录。 因此，例如我有： 
 
 
 
 Main_Directory 
 
 
 Program.exe文件 
 
 
 file.something 
 
 
 directory1中 
 
 
 Directory2 
 
 
 directory3目录 
 
 
 在这种情况下，程序应该将file.something复制到directory1,2和3.通过使用此代码，我可以访问.exe文件夹的绝对路径： 
 
char basePath[255]="";
_fullpath(basePath,argv[0],sizeof(basePath));
 
 理想情况下，要解决问题，可以实现两个功能： 
 
 第一个功能： 
 
Input:
(char[]) The .exe's folder if necessary
Output:
(int) Number of folders inside the .exe's folder.
 
 第二功能： 
 
input:
(int) which folder to pick
(int) total number of folders
(char[]) the .exe's folder if necessary
Output:
(char[]) the name of the folder
 
 有了这两个函数（它应该返回一个字符数组而不是字符串，因为我被迫使用那些数组来使代码工作）我能够做一个简单的循环，每次更改目标的文件夹并复制归档给它。 
 
 当然，问题是如何解决问题，如果存在更好的解决方案，那就这样吧。 
 
 最后一件事：如果你能添加每个块或命令所做的事情，我会非常高兴，因为我还在学习c ++，而且我现在是初学者。 

I'm trying to create a program for educative purposes which should be able to copy one file (of any extension, the name of the file never changes) inside the same directory of the .exe to all the directories inside the main directory. Thus for example I have:
 
 
 
Main_Directory
 
 
Program.exe
 
 
file.something
 
 
Directory1
 
 
Directory2
 
 
Directory3
 
 
In that situation, the program should copy file.something into directory1, 2 and 3. Through the use of this code I have access to the absolute path of the .exe's folder:
 
char basePath[255]="";
_fullpath(basePath,argv[0],sizeof(basePath));
 
Ideally, to solve the problem, two function could be made:
 
First function:
 
Input:
(char[]) The .exe's folder if necessary
Output:
(int) Number of folders inside the .exe's folder.
 
Second function:
 
input:
(int) which folder to pick
(int) total number of folders
(char[]) the .exe's folder if necessary
Output:
(char[]) the name of the folder
 
With those two functions (which should return an array of chars instead of a string as I was forced to use those arrays to make the code work) I'd be able to make a simple loop, changing the destination's folder every time and copying the file to it.
 
Of course it's just how the problem could be fixed, if a better solution exists, so be it.
 
One last thing: I'd be really happy if you could add what each block or command does as I'm still learning c++ and I'm currently a beginner.

原文：https://stackoverflow.com/questions/26147065