Program Of Pointer In C

#include<stdio.h>

#include<conio.h>

main()

{

clrscr();

int a,b,c;

int *ptr1,*ptr2,*ptr3;

a=10;

b=15;

c=45;

ptr1=&a;

ptr2=&b;

ptr3=&c;

printf("\n Value of a= %d",a);

printf("\n value of b= %d",b);

printf("\n value of c= %d",b);

printf("\n  Addrss of a= %u",ptr1);

printf("\n Address of b= %u",ptr2);

printf("\n Address of c= %u",ptr3);

getch();

}

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Pointer is a variable that stores a memory address.

 OK, that is simple ! But, what is a memory address then?

 Every variable is located under unique location within a

 computer's memory and this unique location has its

 own unique address, the memory address. Normally,

 variables hold values such as 5 or “hello” and these 

values are stored under specific location within 

computer memory. However, pointer is a different beast,

 because it holds the memory address as its value and

 has an ability to “point” ( hence pointer ) to certain value 

within a memory, by use of its associated memory 

address.