Illustrate basic pointer use

Illustrate basic pointer use 

#include<stdio.h> 

void main() 

{ 

/*declarations */ 

int n=20,*ptr_n; 

ptr_n=&n; 

/* Displaying value*/ 

printf(“\n Direct access, value=%d”, n); 

printf(“\n Indirect access, value=%d”, *ptr_n); 

/*Displaying address */ 

printf(“\n\n Direct access, address=%u”, &n); 

printf(“\n Indirect access, address=%u”, ptr_n); 

/* Modifying value */ 

n=30;

 /*Direct modification */ 

 

printf(“n\n Direct modification, value=%d %d”, n,*ptr_n); *ptr_n=50; 

/*Indirect modification */ 

printf(“\n Indirect modification, value=%d %d”, n,*ptr_n); }

Also Read

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2. Memory Leak and Dangling Pointer
3. Memory Allocation for 2D Array
4. Dynamic Memory Allocation
5. Pointer Constant and Constant Pointer
6. Pointer Declarations and their Meanings
7. Functions and Pointers
8. Initializing Pointer to Pointer
9. Pointer to Pointer Multiple Indirection
10. Relationship between Array and Pointer
11. Pointer to Array
12. Pointer Arithmetic
13. Types of Pointer
14. Using Pointer
15. Intializing Pointer
16. Declaring Pointer
17. Application of Pointers
18. Value Model VS Reference Model
19. What is Pointer