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C-Pointer Basics

10 posts

Difference between const char *p, char * const p and const char * const p

Last Updated: 11 September 2021

Prerequisite: PointersThere is a lot of confusion when char, const, *, p are all used in different permutations and meanings change according to which is placed where. Fol...read more

C-Pointer Basics

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 integer variable or holds the addres...read more

C-Pointer Basics

What is a Pointer to a Null pointer

Last Updated: 16 June 2022

NULL pointer in C At the very high level, we can think of NULL as a null pointer which is used in C for various purposes. Some of the most common use cases for NULL areTo ...read more

C-Advanced Pointer

Advanced Pointer

C-Pointer Basics

cpp-double-pointer

Pointer Arithmetics in C with Examples

Last Updated: 24 January 2025

Pointer Arithmetic is the set of valid arithmetic operations that can be performed on pointers. The pointer variables store the memory address of another variable. It does...read more

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C-Advanced Pointer

C-Pointer Basics

Difference between NULL pointer, Null character ('\0') and '0' in C with Examples

Last Updated: 01 June 2020

NULL Pointer:The integer constant zero(0) has different meanings depending upon it's used. In all cases, it is an integer constant with the value 0, it is just described ...read more

C-Pointer Basics

How many levels of pointers can we have in C/C++

Last Updated: 18 January 2022

Prerequisite: Pointer in C and C++, Double Pointer (Pointer to Pointer) in CA pointer is used to point to a memory location of a variable. A pointer stores the address of ...read more

C-Advanced Pointer

C-Pointer Basics

cpp-double-pointer

Why do we need reference variables if we have pointers

Last Updated: 01 December 2021

Pointers: A pointer is a variable that holds memory address of another variable. A pointer needs to be de referenced with * operator to access the memory location it point...read more

C-Advanced Pointer

Advanced Pointer

C-Pointer Basics

Unusual behaviour with character pointers

Last Updated: 03 November 2020

In C++, cout shows different printing behaviour with character pointers/arrays unlike pointers/arrays of other data types. So this article will firstly explain how cout be...read more

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C-Pointer Basics

Order of execution in initializer list in C++

Last Updated: 03 November 2020

Prerequisite: Classes, Constructors, Initializer listIn this article, we will discuss the order of execution in the initializer list in C++. Generally, the order of execut...read more

C-Pointer Basics

Difference between constant pointer, pointers to constant, and constant pointers to constants

Last Updated: 17 October 2022

In this article, we will discuss the differences between constant pointer, pointers to constant constant pointers to constants. Pointers are the variables that hold the a...read more

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Advanced Pointer

C-Pointer Basics