What you don't know in C language (3)--function pointers, array of pointers, and array pointers

function Pointers:

A function pointer is a pointer to a function that represents the address of a function:

Such as:

Int (*fun) (int *);

The above code declares a function pointer fun for an int with an input parameter of int * and returns a value.

array of pointers:

The pointer array should be more common, as follows:

int *p[10];

Array pointers:

Pointer to array

int a[4][5];
int (*p) [5] = A;

Extended:

Array of function pointers:

Int (*fun[]) (int *);

Returns the function of the function pointer:

Int (*fun ()) (int *);

Returns the function of an array of pointers:

int (*fun (int *)) [];