[SOLVED] open another file while you open a file on vim

I open a file on vim. Now I want to open another file. how I can do that?
For example I inter vim 1.c and now I have 1.c . but now I want to open 2.c. How I can do that? also how I can switch between them?

One way is to open another terminal and run vim on that one as well. You tell us nothing about the system you're running so I can't be any more specific than that.
jdk

Thanks. I use ubuntu 14.04. and I want to have something like tabs.

This might help: http://www.cyberciti.biz/faq/howto-s...ux-vim-editor/

I haven't done it; I'm working to improve my vim skills, but haven't gotten this far yet.

The KDE terminal called Konsole uses tabs. Just type vim in the terminal then open a new tab in the same terminal and type it again. Doesn't the Ubuntu DE terminal have a similar feature?
jdk

http://vim.wikia.com/wiki/Using_tab_pages