This Pointer in C ++: Cursor This in C ++

This Pointer in C ++: Cursor This in C ++ is easier to understand when the core ideas are paired with practical examples. The sections below explain the topic clearly, highlight useful steps, and point out details that can prevent common errors.

Each object in C ++ has access to its own location through an important pointer called this pointer. The pointer this in C ++ is a hidden parameter to all member functions. So inside a member function, this pointer can refer to the calling object.

The friend functions do not have this pointer, because friend is not a member of a class. Only member functions in C ++ have this this pointer.

Consider the example below to understand the concept of this pointer in C ++:

 #include using namespace std ; class Box { public : // phan dinh nghia Constructor Box ( double dai = 1.0 , double rong = 1.0 , double cao = 1.0 ) { cout << "Constructor duoc goi!" << endl ; chieudai = dai ; chieurong = rong ; chieucao = cao ; } double theTich () { return chieudai * chieurong * chieucao ; } int sosanh ( Box box ) { return this -> theTich () > box . theTich (); } private : double chieudai ; // chieu dai cua mot box double chieurong ; // chieu rong cua mot box double chieucao ; // chieu cao cua mot box }; int main ( void ) { Box Box1 ( 2.4 , 4.2 , 2.2 ); // khai bao box1 Box Box2 ( 4.5 , 2.0 , 3.2 ); // khai bao box2 if ( Box1 . sosanh ( Box2 )) { cout << "Box2 la nho hon Box1" << endl ; } else { cout << "Box2 la bang hoac lon hon Box1" << endl ; } return 0 ; }

Next lesson: Cursor to class in C ++

Frequently Asked Questions

What is This Pointer in C ++: Cursor This in C ++?

Each object in C ++ has access to its own location through an important pointer called this pointer.

Why is This Pointer in C ++: Cursor This in C ++ important?

A clear understanding of This Pointer in C ++: Cursor This in C ++ helps you make informed decisions, avoid common mistakes, and use the relevant tools or techniques more effectively.

How should beginners approach This Pointer in C ++: Cursor This in C ++?

Start with the fundamental concepts, follow the examples step by step, and test each change in a safe environment before applying it to important systems or data.