“C4C” is an abbreviation that can stand for:

Cadet Fourth Class, the rank of a cadet in his first (freshman) year at the United States Air Force Academy
Campaigners for Christ, a parachurch organization
Cancer 4 Cure, the third full-length studio album by El-P, released on Fat Possum Records May 22, 2012.
Cash for Clunkers, a colloquial name for the Car Allowance Rebate System program in the US
Cause 4 Concern, a drum and bass recording and production group
Challoner’s for Charity, a student group from Dr Challoners Grammar School, Buckinghamshire who organise charity events in school to raise money for a variety of charities.
Channel Four Television Corporation, operator of the UK public-service television channel: Channel 4
Sid Meier’s Civilization IV: Colonization, a 2008 PC game made by 2K Games and an installment in the Civilization series.

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