While in C-mode I can jump to a function using M-. on the function name....is there a way i can simply display the function prototype? (preferably as a tooltip or so) I often struggle to remember the exact order and types required by a given function.
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c-eldoc-mode is a mode that is not as heavyweight as CEDET that will do precisely what you want.

Nathaniel Flath
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c-eldoc-mode is exactly what i wanted :) CEDET was a bit too bulky and slow for me...:) thanks! – horseyguy Aug 03 '09 at 14:32
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CEDET (there are rumors that it is finally going to become part of Emacs starting with 23.2) is your friend. After installation, look up semantic-ia-show-summary
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Laurynas Biveinis
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not just rumors - it's been integrated with the CVS repository, I believe. – Nathaniel Flath Jul 30 '09 at 22:05
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CEDET package provide function semantic-ia-show-summary that can show prototype for function/variable under point

Alex Ott
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