you set the c style in emacs in the ~/.emacs file
Code:
(add-hook 'c-mode-hook
'(lambda ()
(c-set-style "Stroustrup")
(c-toggle-auto-state)))
(add-hook 'c++-mode-hook
'(lambda ()
(c-set-style "Stroustrup")
(c-toggle-auto-state)))
look at Esc x c-set-style RETURN TAB
to see the available options
in order to alter one of these styles to suit your taste i think you will have to hack at cc-mode.el and change some of the variables in c-style-alist or just write a new style