Pointer

A pointer is the address of an object in the memory space. The prefix operator & gets the address of an object. For example,

iptr = & int_variable;
cptr = & s[5];    /* if s is a string, cptr points to the 5th char of s */

The prefix operator * refers to the object which the pointer is pointing to. For example,

i = * iptr ;    /* i = int_variable; */
c = * cptr ;    /* c = s[5]; */

There are no pointer constants, and no pointer operations except the pointer equality checks.