" The following are commented out as they cause vim to behave a lot
" differently from regular Vi. They are highly recommended though.
"set showcmd            " Show (partial) command in status line.
"set showmatch          " Show matching brackets.
"set ignorecase         " Do case insensitive matching
"set smartcase          " Do smart case matching
"set incsearch          " Incremental search
"set autowrite          " Automatically save before commands like :next and :make
"set hidden             " Hide buffers when they are abandoned
"set mouse=a            " Enable mouse usage (all modes)

说明一下，在位置文件中，使用“可以进行注释

自动高亮代码提示

" Vim5 and later versions support syntax highlighting. Uncommenting the next
" line enables syntax highlighting by default.
if has("syntax")
  syntax on
endif

" Uncomment the following to have Vim load indentation rules and plugins
" according to the detected filetype.
if has("autocmd")
  filetype plugin indent on
endif

set nu
set autoindent
set cindent "this is main for C language
set tabstop=4
set shiftwidth=4
set softtabstop=4