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How to declare a Two Dimensional Array of pointers in C?

Last Updated: 29 June 2022

A Two Dimensional array of pointers is an array that has variables of pointer type. This means that the variables stored in the 2D array are ...read more

C program to create copy of a singly Linked List using Recursion

Last Updated: 20 October 2020

Given a pointer to the head node of a Linked List, the task is to create a copy of the linked list using recursion.Examples::Input: Head of ...read more

Features and Use of Pointers in C/C++

Last Updated: 23 June 2023

Pointers store the address of variables or a memory location.Syntax:datatype *var_name; Example: pointer "ptr" holds the address of an integ...read more

C-Pointer Basics

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How to modify a const variable in C?

Last Updated: 05 September 2018

Whenever we use const qualifier with variable name, it becomes a read-only variable and get stored in .rodata segment. Any attempt to modify...read more

C++-const keyword

Applications of Pointers in C

Last Updated: 08 January 2024

Pointers in C are variables that are used to store the memory address of another variable. Pointers allow us to efficiently manage the memor ...read more

Output of C programs | Set 64 (Pointers)

Last Updated: 24 August 2022

Prerequisite : Pointers in C Question 1 : What will be the output of following program?[tabby title="C"][sourcecode language="c"]#include qu ...read more

Program to reverse an array using pointers

Last Updated: 13 January 2023

Prerequisite : Pointers in C/C++ Given an array, write a program to reverse it using pointers . In this program we make use of * operator . ...read more

restrict keyword in C

Last Updated: 22 June 2023

In the C programming language (after the C99 standard), a new keyword is introduced known as restrict.restrict keyword is mainly used in poi ...read more

Passing NULL to printf in C

Last Updated: 02 June 2017

Consider the following C code snippet.char* p = NULL;printf("%s", p);What should be the output of the above program?The print expects a '\0' ...read more

Near, Far and Huge Pointers in C

Last Updated: 19 April 2023

In older times, the intel processors had 16-bit registers but the address bus was 20-bits wide. Due to this, the registers were not able to ...read more

When do we pass arguments by pointer?

Last Updated: 08 January 2024

In C, the pass-by pointer method allows users to pass the address of an argument to the function instead of the actual value. This allows pr ...read more

Pointer vs Array in C

Last Updated: 18 May 2023

Most of the time, pointer and array accesses can be treated as acting the same, the major exceptions being:1. the sizeof operatorsizeof(arra ...read more

Why Does C Treat Array Parameters as Pointers?

Last Updated: 12 April 2023

In C, array parameters are treated as pointers mainly to,To increase the efficiency of codeTo save timeIt is inefficient to copy the array d ...read more

How to declare a pointer to a function?

Last Updated: 11 June 2023

While a pointer to a variable or an object is used to access them indirectly, a pointer to a function is used to invoke a function indirectl ...read more

Output of the program | Dereference, Reference, Dereference, Reference....

Last Updated: 09 August 2018

Predict the output of below program[sourcecode language="c"]#includestdio.hint main(){ char *ptr = geeksforgeeks; printf(%c\n, ***ptr); get ...read more