Definition:

A pointer is a variable that stores the address of another variable. Unlike other variables that hold values of a certain type, pointer holds the address of a variable.

For example,

int a=10;

int *p;

p=&a;

Here, p is pointer variable which stores the address of variable. Variable a stores the value 10. Address of a is suppose 5000. This address is stored in pointer p which is value of p.

There may be chain.Address of p is stored in another variable q. So, q is pointer of p.

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