pointers.c

/* p1, p2, p3 defined as pointers to int, while i1, i2 and i3 as just int variables */
int  *p1, i1;
int*  p2, i2;
int * p3, i3;

/* constant pointer to int */
int *const p;

/* pointer to constant int */
int const *p;
const int *p

/* constant pointer to constant int */
int const *const p;
const int *const p;

/* array of pointers to int */
int *a[];

/* pointer to array of int */
int (*a)[];
int a[]; /* the same, as array in C is a pointer to its first element */

/* function returning pointer to int */
int *f();

/* pointer to function returning int */
int (*f)();