I'm absolutely new in C and Vim (now learning), started from Python, but now turned to C for educational reasons, along with which I had to learn the Vim (the point is, it wasn't my choice). The system is Windows 10. Here is the problem:
I installed Vim (32-bit) from here (https://github.com/vim/vim-win32-installer/releases), adjusted it (added to path, edited enviromental variables and so on as in tutorials), found a proper _vimrc file. Vim started working successfully (at least, it opened without errors, showed all the functionality and let me edit the _vimrc file (I mean, before looking for a proper one in the web)).
The next step was to install a Vundle. As in tutorial, I've made in C:\Program Files\Vim a "vimfiles" directory with "bundle" folder and followed the instruction to insert in CMD "git clone https://github.com/VundleVim/Vundle.vim.git C:\Program Files\Vim\vimfiles\bundle". Common CMD told me GTFO, but Git CMD reacted to the command, though again refusing to satisfy me, as there were "too many arguments".
Okay, I googled for it more and found another tutorial with CMD instruction, which advised to insert a "git clone https://github.com/VundleVim/Vundle.vim.git ~/vimfiles/bundle/Vundle.vim" command. It actually worked (I thought), black plate of CMD got filled with multiple white letters indicating the downloading process. After the process was finished, I've checked the vimfiles\bundle folder, it appeared to be empty, but never mind, I did as I was told to.
The next step instructed to edit the _vimrc file, to add some strings about Vundle into it. And as soon as I've tried to open _vimrc via Vim (or gVim), it showed a warning with Error E1187: failed to source defaults.vim. The Vim window opened without any functionality, empty, with only two lines on the bottom containing, I guess, the file size info.
I've cried a bit, but then gathered myself and decided to delete the whole "vimfiles" folder in hope to make it back to the previous step. It didn't work. I thought that it might be the second repository, which led me to the mistake, so I recreated vimfiles\bundle folder, but for this time I used the first repository with shortening my directory as in the second repository command (~/vimfiles/bundle/Vundle.vim). The answer was: "this directory is not empty etc."
After another session of crying I accepted the challenge and deleted (de-installed) Vim, downloaded it as from the very beginning, repeated all the aforementioned actions. But once again, the installation of Vundle informed me that "vimfiles\bundle" folder was not empty, so "suck, my dear". Again, the reinstalled Vim didn't work properly because of the same error 1187; although it showed the contains of _vimrc file, but for reading only.
Then I've surrendered and went here to seak for a help/advice/mercy. Please help, because I'm going to foam from my mouth soon with this Vim.
You are not supposed to "find" a _vimrc. The only "proper" _vimrc is the one you build yourself, as your needs and knowledge evolve.
C:\Program Files\Vim is off-limits. You literally have no business doing anything there. The right place for customisation is in your %userprofile%, which is Window's equivalent of the $HOME or ~ you may find in tutorials):
%userprofile%\vimfiles\ <-- this is YOUR runtime directory, where
all your Vim customisation should happen
%userprofile%\vimfiles\vimrc <-- this is YOUR vimrc
That is where you are supposed to install plugins.
The repo's README.md points to this document specifically targeted at Windows users and to a general FAQ. You are expected to read those documents carefully and follow them. If you did and you are still lost, then use the plugin's issue tracker.
This is either a sign that you messed up Vim's runtime or that the installation didn't work as it should. A thorough wipeout followed by a clean install may help. If it does, stay away from C:\Program Files\Vim.
Again, C:\Program Files\Vim is off-limits. You don't delete stuff. You don't add stuff. You don't change stuff. You leave it be.
Isn't it Albert Einstein who had something to say about doing the same thing over and over and expecting a different result?
You are wasting your time. You should a) give up on Vim, b) get a regular text editor or IDE so that you can focus on learning C.
(the point is, it wasn't my choice)
If someone told you to install Vim as a prerequisite for learning some programming language, then that someone should help you install, configure, and learn it.
Your failure is on them.