Standard committee maintained website: https://www.c-language.org Syntax C declaration syntax Compound Literals Types Type Punning Strict aliasing Functions Variadic functions Inline keywords Preprocessor See C preprocessor Type-generic macro NULL Macro Variables and Objects Objects Scope of identifiers Linkage of identifiers Storage duration and lifetime of objects Definitions One definition rule (ODR) External and tentative definitions Miscellaneous C & C++ Incompatibilities