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The C ``Clockwise/Spiral Rule''
The Clockwise/Spiral Rule is a technique for mentally parsing any C declaration. By starting at the identifier and spiraling clockwise through the declaration, reading right-then-left at each level, you can decode complex types like arrays of pointers, function pointers, and pointers to functions returning pointers. Three worked examples demonstrate the method: a simple array of char pointers, a function pointer, and the notoriously complex signal function signature. The rule also applies to const and volatile qualifiers.
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