Chapter 10, Problem 16RQE

Program Plan Intro

Pointer:

Pointer will allow the user to indirectly access and manipulate the variable data contents. A pointer variable will hold the address of the data contents. If an asterisk “*” operator is present before the variable then that variable is referred as pointer variable. An asterisk “*” is also referred as indirection operator is used to dereferences the pointer.

Adding a value to a pointer variable:

When a pointer variable is added, it is similar to adding number of time the size of the pointer variable that is stored.

Example:

//declaring a pointer variable

int *a;

//incrementing the pointer value by 1

a++;

In the above snippet the pointer variable is incremented by “1” means, the size of the pointer variable is being increased in terms of their size.

1 * 2 = 2

Therefore, additional of 2 bytes will be added to the pointer variable “a” after incrementing it by one.