[ncmncm]

All our languages are Turing-complete. None actively prevent any sort of programming,

Thus, to meaningfully claim that a language supports some programming technique, it has to automate it to some appreciable degree. C manifestly does not; it automates nothing but stack frames and register allocation. Every detail is hand-coded, with every opportunity to make trivial, hard-to-spot mistakes that nothing but exhaustive testing can bring to your attention.