This concept is easy to understand as the name simplifies the concept. Yes, as the name itself suggests, this type of pointer cannot change the value at the address pointed by it. Lets understand this through an example : char ch = 'c'; char *ptr = &ch *ptr = 'a'; In the above...
Pointers in C has always been a complex concept to understand for newbies. In this article, we will explain the difference between constant pointer, pointer to constant and constant pointer to constant. This article is part of the ongoing series on C pointers:part 1,part 2, part 3 (this a...
Let’s reinforce this concept with a brief analogy. Imagine that I am standing in a library and someone walks up to me and says, “Who is Richard the Lionheart?” If I respond by saying, “The king of England from 1189 to 1199,” I am like a normal variable. I am providing the...
InC programming language, we can have a concept of Pointer to a function known asfunction pointer in C. In this tutorial, we will learn how to declare a function pointer and how to call a function using this pointer. To understand this concept, you should have the basic knowledge ofFunctio...
In the above program, the“memory_allocation”function allocated the memory toptr_1. Theptr_1acts like a double pointer and stored a string named“linuxhint”which is printed on the screen. Output Conclusion Thepointer to pointeris a useful concept in C programming language that allows you to...
Let us try the following example to understand the concept of this pointer −Open Compiler #include <iostream> using namespace std; class Box { public: // Constructor definition Box(double l = 2.0, double b = 2.0, double h = 2.0) { cout <<"Constructor called." << endl; length = ...
Explain the concept of pointer accessing in C language Explain reference and pointer in C programming? Go Pointer to Pointer (Double Pointer) Pointer vs Array in C Explain the Union to pointer in C language C program to display relation between pointer to pointer Differentiate the NULL pointer...
I hope this post will be helpful to understand the concept of pointers in C++. Here, I just wrote simple examples of pointers in C++. If you want to practice more examples on pointers, visit: C pointers examples/programs.C++ - Size of structure with no members C++ - exit(0) vs exit...
shared pointer in C++ is a reference counted pointer. It follows concept of shared ownership after initializing a shared_ptr you can copy it.
Using the function pointer, we can create an illusion of polymorphism. This concept is useful where we need to runtime polymorphism. To accomplish this task we need to create a function pointer within the structure and initialize the function pointer with the corresponding function. ...