Priority rules for C-language declarations

The priority rules for the C language declaration mentioned in Expert C programming ("C Expert programming") are as follows:

A declaration begins reading from its name and then reads sequentially in order of precedence;

B priority from high to low is:

The part of the B.1 declaration that is enclosed in parentheses;

B.2 suffix operator: bracket () means that this is a function, and square brackets [] indicate that this is an array;

B.3 prefix operator: asterisk * logo "points to ... The pointer ";

C if the const and/or volatile keyword is followed by a type specifier (such as a int,long, etc.), it acts on the type descriptor, and in other cases the const and/or volatile keywords are used for the pointer asterisk immediately to the left of it.

and give examples: char * const * (*next) ();

A next--next for the name of the declaration

B.1 (*next)--next as a pointing ... The pointer

B.2 (*next) ()--next is a function pointer

B.3 * (*next) ()--next is a function pointer that returns a point to ... The pointer

C char * const--A constant pointer to a character type

So char * const * (*next) means: Next is a function pointer that returns a constant pointer to the character type

Here we will analyze a statement ourselves:

Int (*foo ()) [];

Deduce it for yourself, and then look at the result: Foo is a function that returns a pointer to an integer array. Isn't that right? Here we look at the specific derivation process:

A foo--foo for the name of the declaration

B.2 foo ()--foo is a function

B.3 (*foo ())--foo is a function that returns a pointer to ... The pointer

B.2 (*foo ()) []--foo is a function that returns a pointer to an array

C Int (*foo ()) []--foo is a function that returns a pointer to an integer array