High-level statement (--C Primer, chapter 13th)

Advanced statement:

(1) int *f , G;

This only declares an F pointer. * are all immediately followed.

(2) int *f ();

F is a function whose return value is a pointer to an integral type.

(3) Int (*f) ();

F is a function pointer, and the return value of this function is an int type.

(4) int * (*F) ();

F is a function pointer, and the return value of this function is a int* type

(5) int f[];

F is an integer array, the length of the array is temporarily omitted

(6) int *f[]

F is an array whose elements are pointers to integral types

(7) int f () []--- this declaration is illegal

Here f is a function whose return value is an integer array, but this declaration is illegal

, since the function cannot return an array, only the scalar is returned.

(8) int f[] ()--- this statement is illegal.

Here f is an array in which the return value is a function of int, this declaration is illegal

Because each function does not have the same size, the elements of the array need the same size.

(9) Int (*f[]) ();

Here f is an array, and the elements of the array are pointers to functions, and the return values of these functions are

int type

(Ten) int * (*f[]) ();

Here f is an array, and the elements of the array are function pointers, and the return values of these functions are int* type

The front is old style.

Here's the new style.

Int (*f) (int,float);

Here, F is declared as a function pointer whose arguments are int and float, the return value is int type

int * (*g[]) (int,float);

Here the G is declared as an array, the elements of the array are function pointers, and the parameters of the function are int and float

The return value is a pointer to int*.

High-level statement (--C Primer, chapter 13th)