vim setup

The configuration should be done in the file named "vimrc".

For linux os, the directory should be: /etc/vim/vimrc. For Unix, without root privilege, just as I am..., it needs to make a new file named ".vimrc" in the $HOME/ directory. As the vim starting, it will automatically read this file for configuration. And, the punctuation quotes " is the sign for comment.

" syntax highlighting
syntax on
" automatic indentation
set autoindent
" specifically c/c++ indentation
set cindent
" to show the line number for each line
set nu

Have fun:)