C programming- The Pointer (basic)

When talking about pointer, Pointer is one of the most important topic of C programming language.
There is many use of pointer in programming. But this article focus only the basic of the pointer in C programming language.

This article is for those:
1. Who wants to know the basics of Pointer in c language.
2.Who are looking to understand pointer with examples.


Pointer is a variable. Pointer holds memory address. Whose memory address?
Pointer holds the memory address of an object.

How to declare:

data type *variable_name;

like, int *p
        float *q;

there are two pointer operators: 1. & and 2. *

&: It means the address of the variable.
* : It means the value of the address.

An example can explain the basics of these two operators:

#include <stdio.h>
int main()
{
    int *x,v;

    v = 10; /* variable v is given a value 10 */
    x = &v; /* x is point to the address of v */

    /* as address of v has value of 10 */
    /* So v returns 10 */

    printf ("%d", *x);

    return 0;
}

Here we can see that, & operator holds the memory address.
* operator points to the value of that memory address.