Chapter 10.12, Problem 10.18CP

Program Plan Intro

Pointer:

• Pointer is a special type of variable used to store the address of the memory location, which can be accessed later.
• If an asterisk “*” operator is present before the variable, then that variable is referred as pointer variable.
  • It is also called as dereferencing or indirection operator.
• Pointer is just a type of variable that stores the addresses of other variables.
• Using pointers, it is easy to access the address of a variable; the data stored in that variable can be retrieved.

Syntax of pointer variable declaration:

<variable-type> *<variable-name>;

Define the pointers to structures:

Define the pointers to structure is similar to pointer variable declaration.

Example:

//structure declaration

struct student

{

    //variable declaration

    string name;

    //dynamically allocate array

    int *score;

    //variable declaration

    int total;

};

Pointer is the definition to the above defined structure that can be given as follows:

//defining the pointer definition

student *stu1;