De-Referencing Pointer using Asterisk(*) indirection operator in C Programming

De-Referencing Pointer in C Programming Language :

• Asterisk(*) indirection operator is used along with pointer variable
• Asterisk Operator is also called as value at operator
• When used with Pointer variable, it refers to variable being pointed to,this is called as De-referencing of Pointers

Pointer De-referencing :

• Operation performed to access or manipulate data contained in memory location pointed to by a pointer
• Any Operation performed on the de-referenced pointer directly affects the value of variable it pointes to.

Live Example :

// Sample Code for De-referencing of Pointer
int n = 50 , x ;

int *ptr ; // Un-initialized Pointer

ptr = &n; // Stores address of n in ptr

x = *ptr; // Put Value at ptr in x

Evaluation :

// Sample Code for De-referencing of Pointer

*(ptr) = value at (ptr)
       = value at (2001)
       = 50

//Address in ptr is nothing but address of n

Summary :

1. Name of Normal Variable always points to the Value  of variable
2. Pointer variable always Stores Address of variable
3. *ptr and  n will give us same value.

Incoming search terms:

• c / c programming much asterisk (1)
• wap to indirection operator (1)
• the & operatorin pointer in c language from ebook (1)
• multiple indirection operator (1)
• indirection operator (1)
• indirection android (1)