Here’s a sample .emacs file fragment that might help you along the way. Just copy this region and paste it into your .emacs file. You might want to change some of the actual values.
;; Make a non-standard key binding. We can put this in
;; c-mode-base-map because c-mode-map, c++-mode-map, and so on,
;; inherit from it.
(defun my-c-initialization-hook ()
(define-key c-mode-base-map "\C-m" 'c-context-line-break))
(add-hook 'c-initialization-hook 'my-c-initialization-hook)
;; offset customizations not in my-c-style
;; This will take precedence over any setting of the syntactic symbol
;; made by a style.
(setq c-offsets-alist '((member-init-intro . ++)))
;; Create my personal style.
(defconst my-c-style
'((c-tab-always-indent . t)
(c-comment-only-line-offset . 4)
(c-hanging-braces-alist . ((substatement-open after)
(brace-list-open)))
(c-hanging-colons-alist . ((member-init-intro before)
(inher-intro)
(case-label after)
(label after)
(access-label after)))
(c-cleanup-list . (scope-operator
empty-defun-braces
defun-close-semi))
(c-offsets-alist . ((arglist-close . c-lineup-arglist)
(substatement-open . 0)
(case-label . 4)
(block-open . 0)
(knr-argdecl-intro . -)))
(c-echo-syntactic-information-p . t))
"My C Programming Style")
(c-add-style "PERSONAL" my-c-style)
;; Customizations for all modes in CC Mode.
(defun my-c-mode-common-hook ()
;; set my personal style for the current buffer
(c-set-style "PERSONAL")
;; other customizations
(setq tab-width 8
;; this will make sure spaces are used instead of tabs
indent-tabs-mode nil)
;; we like auto-newline, but not hungry-delete
(c-toggle-auto-newline 1))
(add-hook 'c-mode-common-hook 'my-c-mode-common-hook)